The head of Nintendo, Satoru Iwata, announced today that Nintendo had not successfully predicted how large the demand for Wii consoles was (however, one would think that it’s not a failure for Nintendo that they sold a lot of consoles). So, Satoru is calling for Nintendo to rev up the Wii making machines and be able to pump out more Wiis now. So far, Nintendo has sold over 5 million consoles within the 5 or so months the Wii has been out. He went on to say that Nintendo plans to sell 14 million or so more consoles by the end of this fiscal year.
If you still can’t find that Wii, then this pretty much is the reason why.