Spotify v. Radio – A Study in Dubious Conclusions:
…radio trumps Spotify both in terms of revenue and in terms of promotion. A single radio spin will not only bring in more money than thousands of Spotify streams, but will also put your music in front of thousands (millions?) of people who would’ve otherwise had to actually seek it out in order to hear it.
[Without any certainty to the numbers the whole thing is kind of a farce. But I believe that the aggregation of listeners or fans must belong to the artist.]
Source: The Cynical Musician