My answers are
1) When the PS3 hits $200
2) When the Wii is actually in supply
3) After the final price cut to $100, which they haven't done yet
So around 2010.
Nintendo stopped producing Gamecubes in 2005 I think. It was the same quarter they actually posted a loss. GCs weren't selling and they had a stockpile in factories.
There is no such thing as a console war. This is the first step to game design.