$19.80 goes to one artist, and $0.20 to the other. 99:1.
edit: Maybe what you're getting at is that the person who listened to only one song should pay 99x less. Then it really would be pay-per-play. But Spotify is a subscription service. What else should they do with my extra $9.90? Send it all to the one artist? That would be interesting... but then what if I don't listen to any songs in the month? Bank it and send it to the spread for the following month?
So, it's like 99:1 ratio, but 99 side is Lady Gaga and friends, and 1 is all the indies and niche artist around the world together.
Before streaming with pro-rata royalties, when you bought a record, some money went to the artist of the record (after distribution cuts etc).
Of course Spotify doesn't care. They have to give up 70% of their revenue anyway. But the distribution of this money is the important part and of course pro-rata benefits big labels who have control over the catalog on Spotify and are shareholders.
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.