Tell me that any of the "Jurassic Park" films beyond the first were necessary. Or the "Lord of the Rings" films and shows beyond the original trilogy. These are products of the classical studio system. They keep trying to remake "Back to the Future" and as soon as Zemeckis dies, they'll have their way.
There will be amazing art made using AI, and AI will enable extremely talented creators that could have never made it in the classical studio system.
Don't be so pessimistic.
We're going to have "Obra Dinn" and "Undertale" equivalents in film soon. Small scale auteurs sharing their mind's eye with you.