Yeah, I think it would make sense to have a special condition like the following: You get to train models on public data under fair use if and only if you relea

Yeah, I think it would make sense to have a special condition like the following: You get to train models on public data under fair use if and only if you release the resulting models (it is not clear whether the models themselves are copyrightable at this point) to the public and do not claim copyright on them.