on their own computer using open weight chinese models?

More seriously

1) >users will generate their own

some people write fanfic, most just watch/read instead.

2) https://en.wikipedia.org/wiki/Rebel_Without_a_Crew explains how film maker will film, with whatever they have. AI will enable some people to make what is not financially feasible right now for a single person to do.

'Unique' movie/stories creation will continue.

And like with the rest of things AI can do, the question is more 'who's going to pay for person-made vs "algorithmically optimized AI generated story'.

Same question we have of 'AI generated code' vs 'this code was written by a person'.