I would say that the scope of music offered by Spotify is not so narrow. They have more than 10 million songs now, compared to about 2.5 when they launched late

I would say that the scope of music offered by Spotify is not so narrow. They have more than 10 million songs now, compared to about 2.5 when they launched late 2008 and 11 million in the iTunes store. AFAIK, music goes up more or less as soon as the labels deliver it. One really scary thing I've heard though, is that the masters for a lot of older music is missing, so while the labels might have the rights and even the willingness to license the music, they just don't have it anymore.