Even if copyright laws are not explicitly repealed, the logistics of enforcing them are becoming unsustainable. This is already largely the case today with the pirate bay and libgen still up and running after all these years, but I expect it is only going to get worse. Anyone can run pre-trained models and make them spit out all kinds of copyrighted data. Anyone can train new models given access to enough data and compute. I just don't see a realistic way to force the toothpaste back in the tube.