It's already questionable if anyone can make it profitable once you account for all the costs. Why do you think they try to squash the legal concerns so hard? If they move fast and stick their fingers in their ears, they can just steal whatever the want.
Obviously because you are now allowed to download and share copyrighted works without permission or cost. At least that seems to be the precedent being set in court cases thus far.
I mean for AI literally the only countries involved are the USA and China. I doubt you think China is going to start respecting IP rights anytime soon.
Can anyone explain why it's not allowed to compensate the creators of the data?