This has been a bit of a trend with music for a while. I was pretty annoyed when some tracks from the Tron Legacy soundtrack were not on the CD. They were only on Itunes, or a limited edition 2 disc set overseas that became Ebay fodder. I want the whole damn score, dammit!
Clearly, someone at Paramount have been hitting the Romulan ale to come up with a greedy, asinine idea like this, and piss off the fans.