> I would love to see someone come out with services for music, movies, books that are just APIs you subscribe to and can use any client you want. Think of the novelty of having an interface where you could ignore movies you never want to see, only show the music genres you care about, and not have advertisements for romance novels on your e-reader.

This exists, but it's not a VC-backed product or public company because the money to be made comes from all the "bother" you identified.