Spotify's total revenue is around 8bln/year. It's a bit hard to establish how many musicians are active on Spotify, but the sparse info on the web suggests that

Spotify's total revenue is around 8bln/year. It's a bit hard to establish how many musicians are active on Spotify, but the sparse info on the web suggests that it's at least a million. Those 2 numbers tell you enough if you're want to make a living from music and are not already famous.