This is from Mark Mulligan at Music Industry Blog:
As 2013 music sales figures come in, the picture of streaming growing while download sales slow is coming sharply into focus. It is one of a clear phase of transition/cannibalization (delete as appropriate depending on your point of view) taking place because the majority of paying music subscribers were already download buyers. But that is not the whole picture. There is an even fiercer form of competition for spend that, as far as the music industry is concerned, is inarguably cannibalization.The iTunes Store accounts for the majority of the global music download market and has done so since its inception eleven years ago. Back when it launched, the iTunes Music Store helped transform the iPod from a modestly performing device into a global hit. Music was the killer app, music was what Apple used to sell the device and music is what iTunes customers spent all of their money on. But all of that changed. As Apple’s devices have done progressively more, Apple has introduced new content types into its store that better show off the capabilities of its devices. When Apple launches a new iPad it doesn’t have a label exec holding up the new device playing a song with static artwork displayed…that simply would not showcase the device’s capabilities. Instead an EA Games exec gets up on stage with a new game that fully leverages the capabilities of the iPad’s graphics accelerator, the accelerometer, the multi touch screen etc.