I dnt understand what you are saying but nintendo consoles are established to. They dont have third party support but they have stronger first party titles.. This gen if you look at the top 20 titles saleswise wii and ds titles from nintendo take a major share
And, why do you as a consumer, give a crap about this particular fact? Are you Reggie or Iwata? Am I missing something here? Anyhow, Wii got away with its success because it was new and innovative, since everyone and their granny bought one, but this business model isn't smart long-term when it comes to losing the support of so many major third parties. Nor is it good for the consumer who has to miss out on so many good games. Their first party didn't help them when PS1 and PS2 basically wiped their ass with the Gamecube and N64 either, by the way.
Software is very important, and no third party support creates a huge absence of games. There were dozens of good/great games last generation that were simply not available on the Wii. It's probably going to end up being a repeat again now because Nintendo decided to stay in the past.
Yeah, Mario is great. Metroid Prime was great. Zelda, well, TP and SS were okay. But five or ten first party games don't make a console. Especially when the competitors have dozens being released and provide a hell of a lot more choice.