<<But anyone can go to a library and make a photo-copy for their own use (fair use).>>
I'm a bit late (holidays), but that's not actually always the case, Frank. Some libraries don't allow photocopying of papers on the grounds, I suppose, of possible infringement of copryright. Whatever the reason might actually be, not all allow it. Out of the kindness of their heart, a student tried to photocopy a paper from their university library for me. Their straightforward request was met with shocked eyebrows and a shaking head from the librarian, even after the addition of a pretty please. They were sent to the corner of the room and instructed to take notes.
Ever so kindly, they did just that and sent those instead.