Again, IP is an outdated concept in this day and age. In all honestly there shouldn't even be the notion of fair use, any transformative work should be allowed. There is nothing about LLM training that isn't transformative, just as, well, grinding meat from a steak into stuffed sausages transforms it.

I'm not even talking about big corporations with proprietary models, in fact I oppose their not being open source or weight, I want more open models not fewer as that at least democratizes the value of LLMs. The worst case is having copyright hawks allowing regulatory capture by big AI corps by pushing regulations about licensing content, which, of course, no open model company will be able to afford in the future. I find that infinitely worse than having more lax copyright laws, where only a few corporations can tell you want to think via usage of their LLMs.

Lastly, no one can tell me from first principles why LLM training is bad, on the copyright side, other than, it just is, because copyright law dictates it so. Perhaps copyright law is what needs to be abolished, not LLMs.