I'd argue that the long term future of iTunes isn't fantastic. Individual music companies (Spotify, Rdio) are providing better experiences than Apple can.
Really? I don't like spotify compared to iTunes. I can't imagine locking myself into a service for the rest of my life in order to hear music. Once I buy it from iTunes, it's mine to use as I please, it's not locked up in some stupid custom DRM-laden app (which is fairly ironic).
I can't imagine locking myself into a service for the rest of my life in order to hear music.
But Spotify doesn't lock you into anything.
If I don't pay the monthly fee then I can't listen to albums on my phone. That's pretty much the definition of lock-in.