There has never been a shortage of Wiis here - sometimes the US version gets hard to find and the price is jacked up accordingly, but there always have been plenty (as in loads of them - several dozens, if not hundreds of per video game mall) Japanese Wiis.
Perhaps we're hoarding them all hence you can't find Wiis in the US?
On the flip side of the coin, 360s are readily available in the wild, although I have yet to see an Elite.
The PS3 is rarely seen in the wild here (apart from a few demo units) but this is because it's in low demand here (elsewhere?) and retailers are leery of carrying something that's not in demand.
I am frankly surprised that I was able to import my US Wii on my first attempt and that we sell US Wiis all the way here in Asia but people living in the US can't find US Wiis!
