Did Apple disrupt the music industry in any meaningful way? Digital music could be bought before Apple, including without DRM, so I would say no. That they're a retailer is like saying 7-11 disrupted the candy bar industry.

Everyone wants to get in the content chain business because you can try to essentially monetize other people's content. Only in the television arena the creators are very aware of such mechanisms, they already have an avenue to the consumer, so they vigorously fight against "disruptions". Google quickly discovered that with Google TV.