Since when culture needs copyright to evolve and flourish?! Only the "occidental" world actually uses it. Have you seen culture being in peril elsewhere? Of course not.
Copyright was created as an incentive to help creators for a period of time (originally 14 years). Then it goes into public domain. Nowadays, copyright is just a mafia way to racket people: 75 years after the death of the author is worse than feudal rights!