Lets be honest too ... Nintendo's console output is generally exhausted for any given console by its 4th holiday season. All their dev teams has basically blown their wad as it were by then.
The GameCube and Wii basically chugged to the finish line of their respective generations with minimal software support even from Nintendo. The N64 was a little better but mainly because Rare carried the machine through 2000/2001 (Perfect Dark, Banjo-Tooie, Mickey Speedway USA, Conker's Bad Fur Day).
And that was back in the day when development costs were much lower ... don't expect Nintendo to support a console with a minimal userbase but much higher modern dev costs ... making money off a 30 million userbase was probably a helluva lot easier in 1999/2000 because development costs were much cheaper.
