I don't! I'd hate for console gaming tech to hit the pause button for 5 years, and I'd hate for traditional gamers to be forgotten in favour of less sophisticated gamers. Let Nintendo have their Wii and uber-sales if they get 'em, but not to the detriment of those of us who want something else. Just as all the Barbie lovers of the world are pleased that the creators of Barbie knew their market and didn't try to turn Barbie into Furby or Cabbage Patch Kids when they were all the rage.
Dont worry, I think the death of hi tech traditional consoles is overrated.
First, I dont care how popular Wii gets, I dont believe it can stop sales of PS3/360. Even if they are only 1/3, or 1/2, of Wii, they havent stopped and wont. PS3 can "kill" 360 off by becoming dominant, or vice versa, but I dont believe it's possible for Wii to kill the PS3 or 360 off, no matter how popular it gets, as they dont directly compete.
Look at third party software sales. They are still bigger on Xbox360 than anywhere else. And $60 games help those third party margins.
If anything, I think the long term favors the high tech consoles.