Laws and legal questions aside, it is literally about the richest putting his hand into thousands, no millions, of far less fortunate and taking their stuff to sell themselves.
"Bro, chill, it is AI training, therefore it is ok that I will sell your ability and creativity myself."
Disclaimer, I am not an AI opposer. But I am more than certain that there must be regulations, that every piece of art, book, or music scanned must be paid for. I do not say that we must push AI companies with such heavy regulations that they all crumble. Instead, I say that as AI companies grow, people whose work was used for training also get a share.