Z:gnu-www-ja-stallman-kth--a78ec4-This was because books were co/en

This was because books were copied one copy at the time. It was ten times as hard to make ten copies as it was to make one copy. Then the printing press was invented, and this didn't prevent people from copying books by hand, but by comparison with printing them, copying by hand was so unpleasant that it might as well have been impossible.