Alice listens exclusively to Drake and Bob listens exclusively to Queen. But Queen gets $5 and Drake gets $15!
Why? Alice listened to twice as many tracks as Bob.
This really doesn't seem fair, I'm a very selective listener, and my gf isn't - she just wants lots of background music. She doesn't care what the song is and I'm subsidising artists that produce music that lands in the playlists she plays ("alexa, play happy music") more than I'm contributing to artists that produce music for my tastes. This is a very different to pre-streaming.