it’s the social features and the network effect. if you want to make a playlist and share it with your friends the easiest way to get them to listen to it is to host it on spotify. also blends, collaborative playlist, jams, and now listening all provide the illusion of connection through a shared listening experience. and it’s not so much that these things are better than what we used to have for sharing music, it’s that corporations have all killed our ways of sharing music. that’s what they really hated about groove shark. artists made more money in the groove shark era, but umg, sony, and warner didn’t control how we shared on it.