There was no “wall garden” with the iPod. In SJ’s “Thoughts on Music” that he posted on Apple’s front page in 2007, he said that less than 5% of users music came from iTunes.

This was the same post he said he wouldn’t license Apple’s DRM. But if the music industry would license their music DRM free, the interoperability goals would be achieved an Apple would sell DRM free music.

One of the major record labels and some independent labels took him up on it immediately. It took two years for the rest to come onboard.

iMessage always supported SMS and now RCS. What more did you expect Apple to do?