Well Nintendo may not release all of the shovelware games themselves, but good games on the Wii are far and few between aside from the first party Nintendo games. In my opinion there are 3 types games on the Wii: great 1st party games, dumbed down versions of PS3 and 360 multi platform games, and crap shovelware games from no name developers. The Wii is just a flash in the pan novelty as far as I'm concerned, just look at how shitty it's doing in Japan now. Nintendo makes no effort to broaden it's audience anymore beyond kids and suburban housewives excercising their fat asses on Wii fit! Go for a walk or a run instead, it's free!!
Just as an after thought, I've never seen a company re-hash the same games over and over like Nintendo! I've lost all respect for Nintendo over the last 10+ years!