Can you refer to any evidence that inequality makes systems unstable? There is no reason that I can think of for that. OnlyFans looks pretty stable, in fact. And It doesn't make sense that a political system gets unstable when some people get wealthy. Political systems fall apart when large numbers of people can't afford food (an issue which has nothing to do with equality).

I don't think it's stark. That's how the entertainment business naturally works. Footballers, youtubers, actors, etc...

Onlyfans has a very low barrier to entry and being better than a 100 other people isn't all that hard, assuming you have the body for it and the marketing chops.

I don't understand why you'd want a company doing the government's job, that's what taxes are for.