It was all the fault of the music industry
As I predicted while this case was going on, it all came down to the contract with the music labels who were insisting on the DRM. They required that Apple ensure the security of the system and since Real was able to reverse engineer it the software wasn't secure so that had to be fixed. Jobs specifically said he didn't like DRM and pressured the industry to drop it. He won, and we all won. You can buy music from iTunes and play it anywhere you please now, and they even improved the quality.
If only the movie and TV industry would figure this out and I wouldn't have to buy my Blu rays and rip them to get a version that plays on everything because they're pushing UltraViolet which sucks massively (have you seen the picture quality of their so called HD versions, let alone the SD ones?) It is good to get iTunes codes but even then I typically rip my own copy. I don't share these, I just want a version that is a decent resolution and bit rate. I don't play the Blu rays often despite having 4 players now simply because they take so long to start up when I can just go to my Apple TVs on one of the TVs in the house and fire up the movie or show I'm interested in and it knows where I got to, what I've watched and so on. Discs are a great way to purchase high quality versions though so I'm not too fussed about the current state of play but really, UV is appalling and the hoops necessary just to redeem the code are maddening.