Worse, only for approved music streaming. Let's say I'm a mobile-focused music streaming startup. How will I convince people to switch to me when Spotify lets

Worse, only for approved music streaming. Let's say I'm a mobile-focused music streaming startup. How will I convince people to switch to me when Spotify lets them stream without it counting against their data cap but my service can't offer that. T-Mobile hasn't added support for Google Play or Xbox Music or last.fm or Rdio. I think it will be a very (very) long time before extend it to the scrappy startups. It's effectively a gift to incumbent streaming services and a barrier to entry for newcomers.