Ok OP, sorry but I disagree with you because I support all talented devs out there, not just the ones working at Nintendo.
There are a lot of devs who do their research, who present to the industry and you can respect them and learn from them. I never see Nintendo there at GDC showing and teaching how to make better games and satisfy their consumers.
Please search for "Nintendo" or "Wii" on the schedule here http://schedule.gdconf.com/list and tell me how much is Nintendo doing to support the game industry and their developers? How are they showing how to be the best in class use of Wii U game pad, or optimize the PowerPC? No, they have almost no presence, and you love them so.... much.
Presenters include 12 from Sony, 16 from Microsoft, 9 from EA, 23 from Ubisoft, 11 from AMD, 13 from nVidia, 20 from Google, and 2 from Nintendo... cause if you want people to develop for your platform then you plan 2 people for GDC to talk about Animal Crossing design.
But, I guess since everybody is already making the most out of the WIi U then there is nothing left for Nintendo to teach.