What Hollywood execs don't realize: if & when AI gets good enough, their customers will no longer need them. A viewer will be able to type what he or she wants to see into a computer, & the computer will be able to generate a movie suited to that viewer's tastes right then & there.
This isn't a new idea; it's been a concept in sci-fi for decades. But the tech wasn't really ready till today; AI kinda plateaued for a bit in the early '90's
It's still possible the tech will plateau again, as it did in the early '90's. If it does, it could become a useful tool, allowing smaller artists to create without huge Hollywood budgets. But if it doesn't... If it doesn't this will be like radio vs. TV. Worse.
Art will always exist, but it may not have a commercial future. If AI continues to advance there will be high art in galleries, folk art made by people who want to express themselves, but little or no commercial art or entertainment art. I don't think there's anything we can do about this; even if someone makes some law, not all countries will enact similar laws, & the internet will allow consumers to search out & find a site or program that can create whatever they want to see.
That is likely but art will persist. Human-made art will have a certain cachet, like home-cooked meals, handmade furniture, etc. I imagine musicians will continue to perform live. But it will be a niche thing. Regular entertainment may be largely AI generated and customized to the viewer's taste---which means they will get exposed to even fewer new ideas and perspectives than they are now.