To be fair AI as we have it today wouldn't exist if everything was copyrighted and copyright was enforced very strictly across the web. Not sure if it's fair use and I get that it's not great if these companies try to monopolize knowledge (if they even can do that) but overall being more lax on copyright for fair use is good. Especially scientific knowledge should be openly accessibly to anyone, imagine what we could achieve if we could train LLMs on everything and make it accessible to everyone.