Music played an outsize role in the evolution of the internet. As Larry Lessig put in Free Culture: “Filesharing music was the crack cocaine of the internet’s growth. It drove demand for access to the internet more powerfully than any other single application.” Jobs became the first licensed dealer in that drug and iTunes provided the saddle that enabled Apple to ride the tiger.
Source: Farewell then, iTunes, and thanks for saving the music industry from itself | John Naughton