I get that literally every issue for you is a launching point for an anticapitalist screed but this is just silly.
First, production tools have gotten ridiculously cheap.
Distribution costs are now - depending on how you choose to distribute - basically ZERO. You claim 'capitalism has broken' mantra with your usual sky-is-falling hyperbole when in fact, never in the history of media has Hollywood had *less* of a lock on distribution than they do at this moment.
If Tom Cruise wants to make a film about X, the fact that he doesn't have to pay "Tom Cruise" level salary means he - as the production studio - stands to make a massive, massive $ even with Hollywood accounting.
The idea that this isn't tenable unless there's a BILLION dollar studio behind it is... the sort of thing a billion dollar studio would say.
And last time I checked, Joe Bob the youtuber can make a more profitable, more-popular short than the aggressively-awful, beloved-IP-actually-destroying shit coming from Disney. You picked a fairly bottom-of-the-barrel example there.
Like most Marxists you seem to miss that the *basis* of capitalism is RISK to the capitalists. Marx himself just ... omitted ... this from Das Kapital. Yes, the deep pocket stars - if they really believe that something sacred is going to be lost in the consolidation of power in media (in fact, I might even agree with them in principle, I just don't really care), enough that they are willing to very-bravely-sign-their-names (lol), then as I said: they should put some of their vast wealth up to fix it.
They certainly have a better chance to do so then you or me.
Not every problem needs to have nanny government swooping in to fix things. Oh no, a "monopolistic" situation exists in Hollywood entertainment? I can't think of an industry I personally care less about breaking monopolies. It is a PURE LUXURY good. People don't have to consume it, and are doing less so than ever. Fuck, that's a good thing in my view.