Corporate-owned AI (or anything corporate, really) will be used to control sooner or later. As such, I'm not a fan of those, and I agree with your concerns here. I like community-based and local LLMs, on the other hand.

if there is too much art, so much so that no one will pay for it, won’t everything turn into a living garbage dump? Chances are, if you ask most people in your immediate area, they'd prefer human-made art if they can find someone and can pay for their services. For me, AI art is a result of a "creative demand overflow", for lack of a better term, because not enough human artists are there to do everything.

You'll find someone willing to pay to differentiate themselves from the sameness of mass-produced AI art.