My 2c:

On projects over a certain revenue the AI could say how much it was influenced (trained on) by the respective copyrighted content and then royalties could go out to the people who own that content in percents.

My 4c:

There could be an intellectual property blockchain and everything that can be used to train an AI gets a token.

Again, I think all of this should only be mandatory for huge corporations, similar to how unreal engine is free under 1 million dollar earnings.

This could also be an interesting way to see how human made content makes its way through the “minds” of AIs.