Looks like they haven't yet turned it into profit though http://www.nytimes.com/2015/05/09/business/media/as-spotify-...
This is distinct than the company becoming profitable; many companies will increase in value while not being profitable.
The original commenter is making this comment I presume because he/she thinks Spotify is a mature enough business where it should be generating profits instead of operating at a deficit in order to grow and grab market share.