Some interesting discussion here, but I think it's too harsh on music startups. "Big ideas" are not immediately apparent when they occur. Only in retrospect—and with a touch of nostalgia—do they seem so towering and impressive. Napster, iTunes, Pandora, Last.fm, Spotify and let's not forget Internet radio have made a far bigger change in the ways music is distributed and consumed in the last 13 years than anything that occurred in the preceding 50.