The source of those stats is not clear enough in my opinion.<p>Is the "per-stream" measure a result to try and have a comparable basis between the various actors, or is it really the only underlying factor in the calculation (beside the country which is mentionned as another factor)?<p>My guess would be that services would pay per minute-stream, not per stream. Otherwise, artists that tend to have longer form would not be willing to participate (I'm a big fan of Keith Jarrett, for instance, whose solo concerts mostly consist of tracks of around 40 minutes). You could also imagine hybrid models with bounds that de-linearize certain factors.<p>Looking at a very aggregate average is a recipe for erroneous conclusions...