Lets try it this way-take out that Nintendo is financially successful with NGC. Take out their 3rd place market share. That brings the argument straight to games. The main problem I see is lack of support from 3rd parties. The big plus is great exclusives. If this is an even trade off for you, then you most likely are happy. If you want the same choices as the other two consoles, then you're definitely dissappointed because #1:Some of the titles that were promised never came to fruition. #2: Some anticipated titles were cancelled for the GC , and at the last minute. and #3: You can only afford one console, and must have the first party games, leaving you in a bind.
For me, I am usually happy with just my Nintendo console. I often have the urge to play other games I know will never see the light of day on a Nintendo system, but I can just wait a few months and play alot of them on my PC. Am I happy with the cube? Not ecstatic. I had more fun with my N64 than my cube. But I was younger then, also, so maybe that plays into it. Am I upset about marketshare? Hell yes, because I want Nintendo to get the respect from everyone they deserve. Am I happy that they're financially successful? Yes, of course. It allows them to stay in the business. Now, am I going to buy the Revolution? Absolutely. But having the Xbox 360 come out so early, that kind of enables me to splurge on it first, then buy the Rev later. And for the first time, I may actually own two consoles. And I don't really feel bad about that.