To be fair, how many franchises has Nintendo introduced since then?
Quite a few, actually. Smash Bros., Paper Mario, Custom Robo, Wave Race, 1080 Snowboarding, Legend of Stafi, WarioWare, Magical Vacation, Band Brothers, Pikmin, Animal Crossing, and Cubivore--or was that just published by Nintendo? I dunno.
There's also Geist and Eternal Darkness, which were primarily developed by other companies, but which Nintendo had a hand in making, and which they published and now own. Don't know if you'd count them. I think they own Doshin, too, and maybe the Skip games, Chibi Robo and Giftpia... Not sure about their involvement in or ownership of Golden Sun, Another Code, Detect Hacker, or Wish Room, though.