Emphasis added. Storing files is not the problem. Nobody cared when they were just scanning and storing them. The problem arose when they started giving out copies. And worse, giving out copies without restriction - libaries “lend” ebooks by using DRM systems to try to ensure that only a specific number of copies are out “in circulation” at any given time, and so the big publishers have turned a blind eye to that.
But libraries do not do that to limit access… (I think, unless there is some kind of copyright law making it necessary to restrict access). Don’t they do do that because they have a limited number of book copies that they need to maintain to meet the book lending demands in their area? Seems to me like they are just trying ro maximise people’s access to books given the constraints. Any digital library can obviously do this much faster.