That's only the case due to the fact that Spotify is not a so called "Rights Owner", not to be confused with a actual artist. These "Rights owners" do not only

That's only the case due to the fact that Spotify is not a so called "Rights Owner", not to be confused with a actual artist. These "Rights owners" do not only hold a monopoly, but also decide if and to whom they license at a totally arbitrary pricepoint. No competition, No marginal price. No free market equilibrium. The market failure here lies in the overextension and application of copright law, not in Spotify.