Earlier quoted context omitted.
I don’t think it makes sense for both model builders and the model’s users to separately obtain licenses for the same works used in the training set. A model trained on several copyrighted data sources cannot somehow be used in a way depending on a subset of those sources. So all parameters of usage and compensation should be settled by contract between the model builder and copyrighted data supplier, before the copy…
I slightly disagree, in that I think the person using the tool should bear the burden of copyright. I.e. if the model outputs something under copywrite it merely can't be republished. In this same way, i can use Photoshop on proprietary data but I can't necessarily sell the results.
(1) how do you know if the image that just generated is substantially similar to an existing copyright work? Maybe if some registration tool existed, but other wise the burden is too great
(2) what is stopping someone from generating millions of images and copy righting all the "unique" ones? Such that no one can create anything without accidental collisions.