This is the phenomenon that's invoked in the parable of "boiling a frog." Supposedly, if you put a frog in a pot of water at a comfortable temperature and then slowly warm the water to boiling, the frog will happily swim about even as it is cooked alive.
8/
pluralistic.net
Pluralist: 19 Feb 2020 – Pluralistic: Daily links from Cory Doctorow