If we extrapolate the capabilities of AI to another decade or so, the following scenario becomes quite plausible: A movie will simply be a way of visualizing a book.
Given the amount of talent and thought that goes into a well written novel, an AI trained on a sufficient richness of cultural knowledge should have everything it needs to work with to turn that novel into a compelling motion picture. Which will lead to a change not only of movies, but of books themselves.
Once authors begin to realize that their novel can convert directly into a movie, they will start to write with that goal in mind. We will see a new set of writing styles, optimized for feeding into AI visualizers.
After all, a lot more people are likely to see the film than to read the book. Which means that a novel which converts readily over into a compelling movie experience can be far more lucrative to an author than proceeds from the book itself.
This trend may very well be inevitable, and we already know why. Like Will Sutton said, because that’s where the money is.