We have proof that Meta torrented TBs of books off Anna's Archive. They didn't even buy the books legally in the first place. Fair use doesn't magically make piracy legal. The only reason they haven't been punished is the pathetic state of our government and court system.
Would you be happy if they bought exactly one copy of each book? That might be a dozen sales between the AI labs, some tens of dollars to the author. Is this really what you're so upset over?
And the solution to avoid this piracy has been to buy up rare editions of old books, cut them up and scan them. Better?