File sharing is legal. Breach of copyright is not. It's not dreadfully clear why copyright is a matter for criminal rather than civil law. It's also not dreadfully clear why the inventor of a new drug, who might have invested tens of millions to develop it, gets 25 years protection, while a song or story writer, who might have spent a few months writing it, is protected for many decades. It's also not very clear, unless one suspects that governments can be influenced by the throwing of very large amounts of money at a few influential individuals, why the state should care very much about the travails of the entertainment industry when they clearly care so little about the manufacturing industries.