Let me chime in with a simple question: what temperature and humidity should books be stored at? How many copies of one book do we need to have in a university library to last for ten years? Do we rotate books on the shelves with ones in a storing room elsewhere and if yes, then on what schedule? How do we keep track of what books are where and need what? How do we arrange everything that needs to be done? How is keeping a library of 1k books different from 100k books? How to get prepared for expansion of library? Etc. etc. etc. None of those is a trivial matter