As an ex-field tech for Xerox, I came across a number of problems that occurred simply because people were not willing to RTFM.
It may come as a surprise to you to learn that most people in offices have more important things to do than read photocopier manuals.
Once upon a time the photocopier was a vital piece of office equipment, and people used it often enough to know how it worked, though I don't suppose they read the manuals, even then. With the reduction in paper documents, an average person might make one photocopy a month. Meanwhile, the copiers have become much more complicated.