Interscope wants to increase album sales since those are more profitable than single sales. The song has already sold four million copies in the US alone (and maybe another 2+ million outside of the states). Interscope is probably way more than content with the single sales at the moment. I'm sure they won't keep it "album only" forever.
1. Robin Thicke Download - Blurred Lines (feat. T.I. & Pharrell) 1.00000000
2. Miley Cyrus - We Can't Stop 0.79931640
3. JAY Z - Holy Grail (feat. Justin Timberlake) 0.75109864
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