That's because you're ignoring the primary purpose of copyright, which works perfectly and is invisible because violating it so obviously stupid (because the rules exist): I, an author, go to a print shop and say "I'd like 500 copies of my book, please", and then print shop sells me my 500 copies, then prints 1000 more and sells them themselves.

Copyright is primarily concerned with one-to-one recreations of existing works. That is the primary reason for copyright's existence. All the other stuff is built out of trying to close stupid loopholes that people would try exploit.