Not really. They'll always have a platform to go on like PC to make money. And handhelds still their best option.
Wii is just helping them make a lot more money than usual because it sells virtually anything. PS2 did similar things but PS2 had so many more games coming out than Wii did in its short time so they had more competition. Thus it hurt a few of them while Wii hasn't had that issue YET.
If Wii had gone the way of PS360 they would have simply stuck PC, handhelds, and PS2. It's just Wii is giving them larger sales than they would have ever imagined. I'd say some of their games even selling 100k is more than they could have ever hoped for.








