This "fixes" Hollywood's biggest "issues". No more highly paid actors demanding 50 million to appear in your movie, no more pretentious movie stars causing dramas and controversies, no more workers' unions or strikes, but all gains being funneled directly to shareholders. The VFX industry being turned into a gig meatgrinder was already the canary in the coal mine for this shift.
Most of the major Hollywood productions from the last 10 years have been nothing but creatively bankrupt sequels, prequels, spinoffs and remakes, all rehashed from previous IP anyway, so how much worse than this can AI do, since it's clear they're not interested in creativity anyway? Hell, it might even be an improvement than what they're making today, and at much lower cost to boot. So why wouldn't they adopt it? From the bean counter MBA perspective it makes perfect sense.