I find it surprising that Spotify isn't pursuing its own label. Netflix proves that if your biggest risk factor is other's companies content, you have to move to host your own content before the competition wisens up.
http://www.swedishwire.com/jobs/680-record-labels-part-owner...
Cartels always play very dirty when you threaten their business. And the existing position that makes them a cartel (or quasi-cartel), enables them to do that far better than your typical corporation or commercial entity.