Free enterprise has nothing to do with it. Sure, there are corrupt businessmen ready to profit, but few people would venture to claim that Stevens, Souter, Ginsberg, Breyer, and Kennedy are spokesmen for free enterprise.
It's an alliance of corrupt politicians and corrupt businessmen. It's more in the line of Stalin or Hitler than Adam Smith.
You are right. The entire basis for this ruling has it's roots in the Communist Manifesto and the elimination of private property.