Clever and imaginative games don't sell well these days (Psychonauts, Beyond Good and Evil, Metal Arms: Glitch in the System, Fahrenheit, etc), this isn't the fault of the general gaming public but more of the passionless distributors that give no advirtising on these games and only seems to produce a limited number of copies so they can make sure no one buys them.
This crap happened with Zone of the Enders: the 2nd Runner in Europe and Australia, Atari practically cancelled it the week it was released, and this game I thought was one of the best action games on the PS2.
It seems that companies only want the FPS and Nintendo titles to succeed and that's about it, like Sir Croshaw said about Mass Effect; Bioware needed to say the game had some polygonal sex in it for it to sell. This begs the question why Omikron: The Nomad Soul didn't sell.