I listen to Spotify and Pandora almost exclusively. Mainly Spotify. I probably listened to 300 tracks of Emancipator a month on Spotify. At 0.00786 per play, that works out to 2.85. For the last 2 years: 2.85 * 24. That's $56.59. I seriously doubt I would have spent that much on iTunes. In fact, from their site, I can only spend $46 on their music.
http://emancipator.shop.redstarmerch.com/Dept.aspx?cp=69283_...
In the long run, it seems to me that Emancipator is winning on Spotify, even if I overestimated by a factor of 3 and only listen to 100 tracks a month. Presumably, I will be listening to Emancipator for a long time.