@Owen – thanks, great comment. I wasn’t suggesting that all these models are Freemium models, but different slants on how to move people from being free users to paid users.

re. ads – you’re right, I ignored the revenue that the service will get from the people placing the ads, instead focussing on the click value. You’re also probably right that greater minds than mine have probably done the maths. The “big 4” deal that Spotify has done (http://tinyurl.com/6nfzjs) will undoubtedly have been the result of months of negotiation….although I suppose it could just be another last-ditch attempt by a broken industry to rescue at least some revenue from nothing…