They should be worried. It come with every Apple product starting this fall. New users, who's going to download, create ANOTHER account to have something that comes stock?? Not to mention how much easier its going to be for runners,bikers,in the car, to just switch from radio to playlists or albums. Pandora will lose a major source of revenue. After all, iOS users spend more than any other user base.
let's see how wrong you are
gmail users on ios >>>> mobileme or whatever apple crapware email u call it
youtube >>>> quicktime
google >>> bing/yahoo! (pushed by apple)
next time don't question the loyalty of a great product over convenience -