Nintendo is not going to fail anytime soon. They are having too much success with their GameCube and Game Boy Advance systems to quit on us loyal fans.
At nintendofire.com, I read a LOOOONG article/discussion from the head of marketing and sales at Nintendo of America...he stated that Nintendo was making huge profits with their GameCube and Game Boy Advance systems, and that they are recieving twice as much support from 3rd-party game developers than they did with the N64.
As quoted from the article at nintendofire.com: "Nintendo is in the console business, to stay. Nintendo is in the software business, to stay, Nintendo is in the handheld business, to stay."
And that is all.