Sean Parker pretty much changed the face of the music industry with his 1999 company Napster. Today, the majority of people likely don't even know what the hell as "Napster" is, but it set a precedent for how people consume music that iTunes and other companies soon perfected and turned into a revolution. A revolution, mind you, that left many record companies up the creek without a paddle financially. Their entire business model had changed forever and there was noooo going back.
