Demand IS high, but it’s not exponential. Games are getting cancelled because they won’t generate billions of dollars. The profit floor required by PE is now too high; that doesn’t mean there’s no profit.
As to the rest of it:
If the industry stopped producing the games consumers demand there should be plenty of opportunities for new studios producing easy to sell games. Where are they? And why is there still a flood of games exceeding demand if “the industry” cancels games despite demand?