Can I simultaneously say 'wow' and 'oh dear'?
Wii being so successful is great, but these days the only games worth having are Nintendo ones (and *very* worth having)
Am I bad for still wanting a nice HD fancy nancy uber console for pretty driving games and shooty games?
Bizarre I know, but Wii might end up as a completely separate market. So distant in technology, demography and sales that it actually splits off from PS3 and X360 and either or both of them can still compete for that particular market.
Don't know what would happen to the overall installed base. Wii may pull some of the casual Xbox/PS2 owners, reducing the addressable market for PS3/360, or it may grow the addressable market by reintroducing games to the general population.
Still, NPD is essential viewing, especially now that 24, Lost, House etc are ending their runs.