So Meta borrowed every book from a library and paid to obtain all of the movies and TV shows? They kept only one copy of every book at any time on their system?
Because I'm certainly not allowed to photocopy a library book in its entirety. And I guarantee you a Netflix subscription doesn't allow me to keep a copy of a movie on my hard drive and use it for training man or machine.
Depends on where you live. In Sweden you can make a few copies of almost anything without violating copyright. There are a few exceptions. Copying entire books was added as an exception in 2005. You can still copy parts of a book. How large parts? I don't know, but I once asked for a copy from a library and they said that a few chapters was fine, so maybe that much (I am not a lawyer).