Their pro-rata model is a joke. It's designed to favor big labels who btw are also shareholders of Spotify.
For those who don't know, the money of subscriptions goes into a big pot and then it's distributed based on the total number of plays. Which means the subscription I'm paying, for the most part, doesn't go to the artists I listen to but instead goes to the big labels who represent popular artists.
It's as if, back when people bought physical records, Madonna got money when you bought a record from some indie band.