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Paul Belleflamme

@belleflamme.bsky.social
163 followers 99 following 53 posts

Professor of digital economics, UCLouvain (Belgium) www.paulbelleflamme.com

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Paul Belleflamme @belleflamme.bsky.social · 29/09/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
What happens when digital platforms stop owning the whole marketplace? Open Transaction Networks (OTNs) let independent apps connect buyers and sellers through shared digital infrastructure—rather th...
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Paul Belleflamme @belleflamme.bsky.social · 02/09/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Platforms show up in unexpected places—even in Belgium’s fight against drug trafficking. A recent Guardian article reveals three unsettling platform parallels: short-term rental platforms can be expl...
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Paul Belleflamme @belleflamme.bsky.social · 25/08/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Substack may grow in content and engagement while making it harder for individual writers to earn a living. I connect Scott Carney’s diagnosis to mission drift, subscription fatigue, and growing compe...
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Paul Belleflamme @belleflamme.bsky.social · 13/08/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Platforms can lose their mission even when founders and investors stay faithful to the original story. In this new note, I look at a quieter mechanism: users multihoming across platforms with differen...
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Paul Belleflamme @belleflamme.bsky.social · 17/07/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Uber’s $14.8 billion bid for Delivery Hero nearly doubles its delivery footprint to 99 markets and plugs dozens of local food‑delivery networks into its global app. In my new post, “Uber Eats the Hero...
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Paul Belleflamme @belleflamme.bsky.social · 04/07/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Platforms don’t just “go bad” by squeezing their users — they can also lose their mission and export hidden costs to everyone around them. My latest three posts look at: - Enshittification explained...
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Paul Belleflamme @belleflamme.bsky.social · 01/07/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Platforms can look like unambiguous success stories from the inside while quietly exporting costs to everyone around them. In my new Platform Strategies post, I focus on these external harms: socia...
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Paul Belleflamme @belleflamme.bsky.social · 22/06/2026
Patreon started by letting fans directly fund creators. Over time, however, many early users have seen signs of “mission drift”: controversial fee changes, stricter policy rules, etc. I examine how platforms may gradually grow away from their original “Why". open.substack.com/pub/paulbell...
open.substack.com
Beyond "Enshittification": Mission Drift
How platforms may grow away from their original purpose.
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Paul Belleflamme @belleflamme.bsky.social · 20/06/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Platforms don’t just “enshittify” by squeezing their users; they can also drift away from the very problems they were meant to solve. In this new post, I explore mission drift: how civic, cooperative ...
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Paul Belleflamme @belleflamme.bsky.social · 13/06/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Platforms don’t just “go bad” by magic. In my latest Platform Strategies post, I unpack Cory Doctorow’s famous “enshittification” thesis using the tools of platform economics, showing when he’s right,...
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Paul Belleflamme @belleflamme.bsky.social · 14/05/2026
open.substack.com/pub/paulbell...
open.substack.com
Substack’s Tax, Etsy’s Lesson
According to The Verge, Substack is under pressure because its 10 per cent revenue share increasingly pushes high‑earning writers to look for cheaper, flat‑fee alternatives like Ghost and Beehiiv. The...
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Paul Belleflamme @belleflamme.bsky.social · 04/05/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Uber’s latest announcements—hotel booking via Expedia, plans to add Vrbo rentals, and AI‑powered trip planning—push it further toward a bundled “travel super‑app.” The article uses a platform‑strategy...
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Paul Belleflamme @belleflamme.bsky.social · 12/04/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
In the first part of this post (The Kneecap Effect: Network Economics of Minority Tongues), I argued—using the Irish band Kneecap and the work of Gabszewicz, Ginsburgh and Weber—that languages behave ...
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Paul Belleflamme @belleflamme.bsky.social · 12/04/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
What do an Irish hip‑hop trio, Basque immersion schools and endangered Breton have in common? Part 1 of this two‑part series uses their stories to introduce the ‘network economics’ of languages, drawi...
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Paul Belleflamme @belleflamme.bsky.social · 18/03/2026
open.substack.com/pub/paulbell...
open.substack.com
Platforms, Flicks, and Feedback Loops: Inside an MBA Session at Wits
In early March, I had the pleasure of visiting WITS Business School in Johannesburg as part of an Erasmus+ mission.
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Paul Belleflamme @belleflamme.bsky.social · 03/03/2026
Batibouw isn’t just another trade fair this year. In a sector hit by crisis, its role as a brick‑and‑mortar platform becomes strategic. I explore how the 2026 edition can actively contribute to a new growth path for Belgian construction. paulbelleflamme.substack.com/p/batibouw-i...
paulbelleflamme.substack.com
Batibouw in Crisis Mode: How a Brick‑and‑Mortar Platform Can Rebuild Construction
How Batibouw, as a brick‑and‑mortar platform, can help a crisis‑hit Belgian construction sector coordinate, innovate, and find new paths to sustainable growth.
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Paul Belleflamme @belleflamme.bsky.social · 28/01/2026
🎶 𝙍𝙝𝙮𝙩𝙝𝙢 𝙞𝙨 𝙠𝙚𝙮 𝙞𝙣 𝙢𝙪𝙨𝙞𝙘, 𝙚𝙫𝙚𝙣 𝙛𝙤𝙧 𝙖𝙡𝙗𝙪𝙢 𝙧𝙚𝙡𝙚𝙖𝙨𝙚🎶 The article below reinforces what I highlighted in a previous blog: artists wisely avoid releasing their albums during the same period as major stars (see paulbelleflamme.substack.com/p/when-taylo...). stereogum.com/2486498/robb...
stereogum.com
Robbie Williams Breaks Beatles Chart Record By Waiting Out Taylor Swift Album Rollout
Robbie Williams now has the most UK #1 albums of all time. The former Take That member’s latest, Britpop, debuted atop the UK album chart today, becoming his 16th #1. That surpasses the record of 15 s...
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Paul Belleflamme @belleflamme.bsky.social · 26/01/2026
open.substack.com/pub/paulbell...
open.substack.com
The Price of Being Re‑Routed: Traffic Apps, Network Effects, and Local Streets
Belgian municipalities have a bumpy ride with traffic-routing apps.
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Paul Belleflamme @belleflamme.bsky.social · 13/01/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
LEGO’s SMART Play platform is an impressive step in the company’s digital transformation—but what does it tell us about openness, network effects, and competition “for” versus “in” the market? This pi...
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Paul Belleflamme @belleflamme.bsky.social · 07/01/2026
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
A new post is up on Platform Strategies: a dive into how surplus‑food apps like Too Good To Go and AI‑driven demand forecasts are quietly reshaping incentives in grocery retail – sometimes cutting was...
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Paul Belleflamme @belleflamme.bsky.social · 11/12/2025
open.substack.com/pub/paulbell...
open.substack.com
When Christmas Meets Platforms: Gifts, Inefficiencies and the Digital Fix
Every December, platform markets put on their Christmas costumes.
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Paul Belleflamme @belleflamme.bsky.social · 03/12/2025
Check my last blog:
open.substack.com
Rebooting Europe’s Flagship Comics Festival
Platform Economics Behind the Angoulême Meltdown
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Paul Belleflamme @belleflamme.bsky.social · 04/11/2025
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Europe’s railways are a vital part of the continent’s infrastructure, connecting cities and regions while providing sustainable and comfortable travel options for both passengers and freight. Yet, des...
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Paul Belleflamme @belleflamme.bsky.social · 27/10/2025
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
This post analyzes the economic and managerial mechanisms behind BlaBlaCar’s rise in India, and draws actionable lessons for entrepreneurs.
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Paul Belleflamme @belleflamme.bsky.social · 14/10/2025
Cet article se base sur mon étude, que vous pouvez trouver ici: www.regards-economiques.be/index.php?op...
regards-economiques.be
Regards économiques - Un éclairage économique du débat autour de la tarification locale chez Colruyt
Site web de la revue "Regards Economiques" des économistes de l'UCLouvain.
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Paul Belleflamme @belleflamme.bsky.social · 03/10/2025
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Catch the story everyone in entertainment is talking about: how Taylor Swift’s dominance is changing the rules for artists everywhere. Want to know what’s really behind “the Taylor Swift effect”? Rea...
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Paul Belleflamme @belleflamme.bsky.social · 16/09/2025
open.substack.com/pub/paulbell...
open.substack.com
Decoding YouTube’s next act: Shopping, streaming & superfans
YouTube announced a wave of major updates today at its annual Made on YouTube event, highlighting a strategic push into new activities and monetization strategies.
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Paul Belleflamme @belleflamme.bsky.social · 11/09/2025
From cars to clouds: The promises and perils of Uber’s ambitious platform expansion open.substack.com/pub/paulbell...
open.substack.com
From cars to clouds: The promises and perils of Uber’s ambitious platform expansion
Uber’s latest announcement—integrating Blade’s helicopters into its app in 2026—illustrates the logic and ambition behind platform diversification and envelopment.
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Paul Belleflamme @belleflamme.bsky.social · 26/08/2025
📣 Call for advice from fellow economics educators: I’m looking for effective ways to explain the 𝕤𝕦𝕓𝕘𝕒𝕞𝕖-𝕡𝕖𝕣𝕗𝕖𝕔𝕥 ℕ𝕒𝕤𝕙 𝕖𝕢𝕦𝕚𝕝𝕚𝕓𝕣𝕚𝕦𝕞 so that it really clicks. ⁉️ Have you discovered intuitive explanations, analogies, or classroom activities that help it stick?
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Paul Belleflamme @belleflamme.bsky.social · 14/08/2025
Digital platforms often face a trade-off: satisfying one user group’s needs can disadvantage another, as the total transaction value is fixed. For example, Airbnb must balance guest flexibility and host protection. techcrunch.com/2025/08/14/a...
techcrunch.com
Airbnb will allow US users to book stays without paying up front | TechCrunch
Airbnb has launched a new feature called "Reserve Now, Pay Later" that lets users in the U.S. reserve a property without paying upfront, potentially allowing people to cancel their bookings with less ...
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Paul Belleflamme @belleflamme.bsky.social · 12/08/2025
substack.com/profile/2178...
substack.com
Paul Belleflamme (@paulbelleflamme)
🌍✈️ Can digital platforms save the world’s “secret places” — or are they the ones putting them on the map? From the cobbled streets of Clovelly to real-time crowd apps and selfie parks, my latest pie...
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Paul Belleflamme @belleflamme.bsky.social · 02/08/2025
substack.com/@paulbellefl...
substack.com
Paul Belleflamme (@paulbelleflamme)
Recently,I explored how the food-delivery industry has evolved across the US and Europe, highlighting why DoorDash’s acquisition of Deliveroo was anything but surprising (see https://paulbelleflamme.s...
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Paul Belleflamme @belleflamme.bsky.social · 31/07/2025
Dropbox’s decision to discontinue Dropbox Passwords highlights a critical lesson in platform strategy: not every feature achieves the scale or impact required for long-term success. This move offers a real-world example of the “minimum viable platform” concept. open.substack.com/pub/paulbell...
open.substack.com
Cracking the Code: Demystifying the Minimum Viable Platform (1)
In 2011, Eric Ries popularised the concept of a Minimum Viable Product (MVP) as part of the Lean Startup methodology.
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Paul Belleflamme @belleflamme.bsky.social · 24/07/2025
"Indiegogo is being acquired by the board game crowdfunding platform Gamefound." (The Verge, 24/07/25) It is not surprising that the reward-based crowdfunding sector gets more concentrated, as we explained in a recent blog: open.substack.com/pub/paulbell...
open.substack.com
Concentration in the French Crowdfunding Market: The Role of Positive Spillovers Across Projects
What explains KissKissBankBank's takeover by Ulule?
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Paul Belleflamme @belleflamme.bsky.social · 17/07/2025
Check out my latest (free access) publication, which explores the dynamic impacts of crises on sharing economy platforms. The article presents a conceptual framework for understanding how platform participation, strategy, and resilience evolve in response to disruptions. www.mdpi.com/2071-1050/17...
mdpi.com
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Paul Belleflamme @belleflamme.bsky.social · 13/07/2025
Frightening...
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Paul Belleflamme @belleflamme.bsky.social · 25/06/2025
substack.com/@paulbellefl...
substack.com
Paul Belleflamme on Substack
🚦 WhatsApp is changing—and so is the game for Meta. Meta’s decision to introduce ads on WhatsApp could redefine the platform’s future, but will users accept it? In my latest post, I break down the st...
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Paul Belleflamme @belleflamme.bsky.social · 26/05/2025
open.substack.com/pub/paulbell...
open.substack.com
Airbnb’s Strategic Expansion: A Textbook Case of Platform Growth
How the travel giant is leveraging “densification” and “diversification” to dominate the experience economy
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Paul Belleflamme @belleflamme.bsky.social · 12/05/2025
open.substack.com/pub/paulbell...
open.substack.com
From Take Eat Easy to Takeover: How Platform Wars Shaped the DoorDash–Deliveroo Merger
The online food delivery market has transformed dramatically over the past decade, reshaping how millions of Europeans and Americans order their meals.
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Paul Belleflamme @belleflamme.bsky.social · 10/04/2025
paulbelleflamme.substack.com/p/vinted-vs-...
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Paul Belleflamme @belleflamme.bsky.social · 21/03/2025
Discover how the principles outlined in 'Platform Strategies' help us understand the fascinating world of second-hand clothing platforms. #econSky
open.substack.com
Thrifted treasures: Overcoming challenges and unlocking the potential of second-hand fashion
How can platforms strive in this promising market?
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Paul Belleflamme @belleflamme.bsky.social · 01/03/2025
Thanks to #PlatformPapers and @gjrietveld.bsky.social for allowing us to popularise our academic research. #EconSky
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Paul Belleflamme @belleflamme.bsky.social · 18/02/2025
While digital platforms may offer broader reach and scalability, physical fairs like Batibouw provide unmatched opportunities for trust-building and professional networking that can't be replicated online. #EconSky #Platforms
paulbelleflamme.substack.com
Batibouw: A brick-and-mortar platform … for brick and mortar trade
Belgium's largest trade fair for construction provides a compelling case study to illustrate the strategies of platforms.
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Paul Belleflamme @belleflamme.bsky.social · 08/02/2025
#crowdfunding #econsky
paulbelleflamme.substack.com
Concentration in the French Crowdfunding Market: The Role of Positive Spillovers Across Projects
What explains KissKissBankBank's takeover by Ulule?
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Reposted by Paul Belleflamme
Thomas Lambert @tlambert0803.bsky.social · 02/02/2025
Notre nouvel article dans de @france.theconversation.com "Concentration sur le marché français du crowdfunding : le rôle des retombées positives entre projets" theconversation.com/absorption-d... @belleflamme.bsky.social
theconversation.com
Absorption de KissKissBankBank par Ulule : les raisons d'une fusion
L’absorption de KissKissBankBank par Ulule n’est pas une surprise. Ulule a mieux tiré parti des retombées positives entre projets que sa rivale.
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Paul Belleflamme @belleflamme.bsky.social · 20/01/2025
Our research reveals that despite competing for funding, projects can benefit each other. We've identified a significant spillover effect accounting for approximately 4% of the daily rise in project contributions. This phenomenon is driven by recurrent backers who support multiple projects.
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Paul Belleflamme @belleflamme.bsky.social · 23/12/2024
📈 BlueSky's growth at the expense of X exemplifies the "Shelter Runaway Chickens" strategy we explain in our book. ⬇️ Find out more about this strategy in this blog post: paulbelleflamme.substack.com/p/opportunit... #EconSky
theguardian.com
From X to Bluesky: why are people fleeing Elon Musk’s ‘digital town square’?
Musk’s platform has lost 2.7 million active US users in two months, while its rival has gained 2.5 million
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Paul Belleflamme @belleflamme.bsky.social · 13/12/2024
Excellent!
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Reposted by Paul Belleflamme
Joshua Gans @joshgans.bsky.social · 12/12/2024
Kevin Bryan outlines how to use AI in your University classes. www.youtube.com/live/JzQ13Lk...
youtube.com
YouTube
Share your videos with friends, family, and the world
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Paul Belleflamme @belleflamme.bsky.social · 09/12/2024
The latest 'Platform Strategies' post examines how Airbnb’s Co-Host Network initiative affects the delicate balance of network effects on the platform by introducing a novel form of co-opetition among hosts, with uncertain value creation and distribution. #EconSky
paulbelleflamme.substack.com
The Co-Opetition Dilemma: Will Airbnb’s Co-Host Network benefit everyone?
In October 2024, Airbnb introduced a new feature, the Co-Host Network, to facilitate connections between new hosts and experienced local co-hosts.
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