I'm pretty sure this doesn't address the key point, that OpenAI and others apparently used a giant dump of pirated epubs as one of their training sources.
Obviously these are attempts at recreating the Mona Lisa, but none of them are the Mona Lisa. Whether they fall within fair use is an entirely separate question.
(Btw I'm not saying that's the case, but that's essentially the argument)
If the companies had bought all of the ebooks, then they might be in the clear.
Or is it "you did a bad thing in the process of making another thing but we can only punish the initial act"
Yes you can create a transformative work but if you can get it to make an exact copy and can't get it to stop doing that I would say there's a problem.
if your a service provider and I send you a DCMA request how do you handle it?