Basically, after everyone on Earth buys all available books, the only way to make extra money on books is: a) to create new books b) to create new people Opti

Basically, after everyone on Earth buys all available books, the only way to make extra money on books is: a) to create new books b) to create new people Option b) would not work very well for a number of reasons and option a), well, it's too difficult. Therefore go ahead and invent very smart option c) make everyone repay for the same content over and over