The situation with the Wii was quite different:
- Nintendo was coming out of a generation where it had placed last, they haven't had too much money
- the Wii had a very unique, motion based input scheme to differentiate itself from its competitors
- the PS3 was way too expensive for all the casual gamers who owned a PS2 for its wide range of titles, creating a huge opportunity to grab this market segment
Now, however, Nintendo has a lot of money, the competitors have motion control too (we could argue here about the Kinect having even better potential, but no system seller yet), and those who want to replace their Wiis can easily be tempted by the Sony and MS consoles with a huge game library and very strong online infrastructure and market.
Of course that doesn't mean that a radically new control scheme or something of that caliber couldn't once again differentiate the new console enough to repeat the Wii's success. It's just less likely to happen.
- Nintendo was coming out of a generation where it had placed last, they haven't had too much money
- the Wii had a very unique, motion based input scheme to differentiate itself from its competitors
- the PS3 was way too expensive for all the casual gamers who owned a PS2 for its wide range of titles, creating a huge opportunity to grab this market segment
Now, however, Nintendo has a lot of money, the competitors have motion control too (we could argue here about the Kinect having even better potential, but no system seller yet), and those who want to replace their Wiis can easily be tempted by the Sony and MS consoles with a huge game library and very strong online infrastructure and market.
Of course that doesn't mean that a radically new control scheme or something of that caliber couldn't once again differentiate the new console enough to repeat the Wii's success. It's just less likely to happen.