(**Hedorah - the DS and Revolution are two systems. EDIT: Point made)
Okay, Ian - that's got to be the best analogy I've ever heard. Awesome. And good point, too.
But I disagree. I don't look at the market the same way you do. Yes, Nintendo is last in the marketplace right now (in the home console race only, but we'll ignore that). Yes, third party support has wavered significantly (with the exception of Square-Enix who wavered back - and stayed there). And yes, buying two home consoles is a significantly large investment, especially with memory cards and extra controllers.
But what I don't see is how Nintendo's market share has affected gamers negatively. More choice and a larger market are good things - that's simple economy practice. And Nintendo is promising everything that its fans love - more of the established franchises, new games from Square, Ubisoft, EA, and Shiggy, and progression into the online market. They are number 3 - and they are delivering consistently.
You're right, market share matters, and if you buy the 'last place brand car', you are going to be punished. So don't buy an N-Gage. But Nintendo has some kickin' gas stations that I will go out of my way to frequent.