I don't understand the reactions effectively saying "Nintendo make these kinds of games, deal with it". I think what the OP is meaning is that, for instance, someone like Sony makes Ratchet & Clank, they give us stuff like Bloodborne, Until Dawn, Journey, Gran Turismo, Driveclub, Infamous, Heavy Rain... you know a wide range of games targeting different audiences with different atmospheres. When you look at Nintendo games it is somewhat one note.
Yeah there's a few things branching out into different genres and styles but very little. Nintendo fans seem content oohing and ahhing over the latest Donkey Kong or Yoshi game announcement while most others look on bewildered at what's so exciting about them. Nintendo proudly boast about one new gameplay feature or something while I sit there waiting for something truly new and innovative, not a small adjustment to an old (if well made) franchise.