Seems to me that iTunes captured the market because of the amazing integration with music devices and not the price point. Until someone beats them at that, I think things will continue as they are. I'm not an Apple fanboy by any means, but nobody else has produced a device that makes it so easy to find, buy, and listen to music on the go. Amazon's Cloud Player is a good start, since it eliminates having to load the…
Completely agree with this, but I would two more factors -- a relevant selection from the outset, and the reliability and legitimacy of iTMS.