There are quite a few fan fiction sites out there...I would think trying to sell something in the fiction market would be very hard.
You’re probably right about junk crowding out good nonfiction.
I used GROK to write a simple 2 page story.
GROK: Create a story on squirrels for children
https://x.com/i/grok
GROK: Create cartoons of squirrels with acorns
GROK: Create a 10 page story on squirrels for children
It came up with: The Great Acorn Adventure
The above story took about 10 minutes to create. I copied the text and pasted it into Word and saved the images and pasted into Word. Changed the font and size and had my story. You can ask it to create a 10 page or 30 page etc story about any subject. Each time you ask it will come up with something different. With practice you can ask it to expand on what it already wrote.
I expanded it to 10 pages. This was all done in maybe 15 minutes. The actual time to “write” the story in GROK was a minute.
AI is also getting lazy unqualified ‘students’ through college. The good news? Today’s AI isn’t the AI of the future... in 6 or 7 years it’ll be what we imagine it is today...