Pharrell made less than $3,000 from 43M Pandora streams of “Happy”
fusion.net
fusion.net
I do see pandora as different from spotify, though. It's more a replacement for radio than purchased music.
It's not easy to listen to Pharrell's "happy" immediately on pandora like I could if I owned the track. I'd have to create a station, and keep clicking until I get the song, with advertisements along the way. I might hit the max number of songs allowed per hour, at which point I could create a new station and do the same thing. Eventually, I would get the song, probably within 15-20 minutes?
On spotify, I would be able to bring the song up immediately and listen to it, just as if I owned the track on iTunes or had purchased a hard copy. There are ads unless you use the paid service, but they usually don't kick in until you've already listened a bit.
Pandora tends to be more of a discovery service for me - I have found out about and purchased music I heard first on Pandora, similar to radio.