A law is only a law if it is enforceable. Copyright is not enforceable since every copyrighted object is a requirement on the government's resources, and such objects are (basically) infinitely easy to create. Therefore, since the government has finite resources, it is simple to create a system where it cannot protect all (supposedly) copyrighted objects, namely one in which (# objects)*(resources required to protect an object) > governmental resources. It is a fundamentally unenforceable law and therefore not a law.