First, there's this thing called a deposit library: https://en.wikipedia.org/wiki/Legal_deposit
Second: I, as a user of the service, who learns things, still pay nothing.
Should I be required to directly pay for the things I learned from, or is it sufficient that someone is? Because if the latter, then picking up a book from a normal (non-deposit) library, showing it to an OCR system, and having an AI learn from that, would involve just as much payment as I ever made to read a library book (with the possible exception of late return fines, I can't remember if I ever had any of those).