There's a website (think it's have I been trained or something like that, I remember it being similar to have I been pwned) where you can check to see if they stole your art but I don't know about writing.
Would AI companies go out of business if they were forced to identify and compensate everyone whose data they trained on without permission?
If the business model can't profit without theft, should it be able to continue trading?
Sometimes I feel like a lot of business models couldn't profit without theft.
The simplistic answer is "no" and with that the entire economy collapses within 10 seconds XD