>People liked having Napster, but it didn't stop file sharing going from a big mainstream app to underground sites run out of Russia (or other places that ignore copyright law). Sure, you can download music/movies still, but it's not like the Napster days.

Definitely, but that's not because as society we managed to put an end to piracy. It's because people are just not as interested as they were before. Piracy networks for media are alive and well, I'd even say that some are in the best shape they've ever been.