Generative content is going to make things super weird with the following.

Theres TONS of 1950-1990 SciFi content. Lots of 1 off books, or trilogies. Really cool stories.

And generative video could get to the point where we can make those books into movies.

The weird place here is who owns the rights, and all that. And it coukd easily fall into an area like The Last Ringbearer is in

https://en.wikipedia.org/wiki/The_Last_Ringbearer

Epub free, because of weird rights issues with Tolkien estate. https://www.tenseg.net/press/lastringbearer