I think if they would have brought the Q stateside, they would have seen a lot more revenue.
While most people (younger age, not to be cliche) would probably have stuck to the standard cube looks, I'm willing to bet there are a large number of gamers, mostly older, with their own choice of entertainment center schemes, that would have purchased the Q - and of course, didn't import because of the outrageous costs, or they just didn't know about it.
Of course, this is the case for a LOT of Japanese items, game-related and not. (And alternatively, a lot of Japanese items that just need to stay over there
)
We're just as quirky as them, and while the Q wouldn't have made the most significant impact versus the standard Cube design... who, with their own free choice, WOULDN'T want a shiny, mirrored Q to play their cube games? That thing is just slick-looking, no matter how you slice it.