Because you aren't being "censored" by billionaires at all. They have made the business decision to reduce the usefulness of their AI to prevent their liability from being legally, or even socially, held accountable.
Again, consider my example about YouTube - it's not illegal for Google to put pornography on YouTube. They still moderate it out though, not because they want to "censor" their users but because amateur porn is a liability nightmare to moderate. Similarly, I don't think ChatGPT's limitations qualify as censorship.
Okay, i mean you can say censorship isn't censorship if you want? This is my point, why are you treating limits placed on your expression/sharing/information differently based on what type of person is doing it?
Because fundamentally it's the same type of censorship as someone deciding to not sell porn magazines, videos or the the Anarchist Cookbook in their newsstand/bookstore/etc. back in the day. They judged (probably quite rightly) that it's not good for business.
Of course the market being extremely concentrated and effectively an oligopoly even in the best case does shine a somewhat different light on it. Until/unless open models catch up both quality and accessibility wise.
Again, consider my example about YouTube - it's not illegal for Google to put pornography on YouTube. They still moderate it out though, not because they want to "censor" their users but because amateur porn is a liability nightmare to moderate. Similarly, I don't think ChatGPT's limitations qualify as censorship.