Not quite but I don't know the actual term for a market that is completely controlled by two or three players.
Basically the major platform holders are going to be the only ones who can differentiate between human beings and AI slop and without the ability to do that any up and coming AI product is going to be trained on freely available data on the internet which is so completely full of slop that the end result is going to be garbage.
AI was a one-time Gold Rush for a couple of companies and everyone else is going to be either microsoft, google, Amazon because they own twitch and then a handful of people like Twitter and Reddit will have half-assed systems that don't work except for specialized use cases like how Twitter will let you undress people you shouldn't be undressing and we let it do that because the owner is above the law...
I've said it before and I will say it again AI is a antisocial technology. It will do nothing but eat jobs and water and electricity while putting a handful of psychopaths in a position of even more power over you. We already had machine learning models for the actual useful scientific stuff. When folks say AI what they mean is something that can replace people that work for a living at enormous cost to society.
And as usual the people getting the benefit won't pay that cost, you will.