Apple is finding that its influence over labels is slipping as YouTube, Spotify, Pandora and other streaming services gather momentum. One independent label said that iTunes’s share of the label’s revenue has eroded from more than 70% in 2012 to about 50% today.
I think the main reason I stick with iTunes is because I can listen to whatever I want, not just whatever jumped through all the hoops to get on Spotify.
Even with Spotify’s addition of Collections (which hasn’t rolled out to me yet) I still use iTunes/iTunes Match. Maybe that will change.