I concur with astrosmash but also add, by appealing to the casual market Nintendo has given themselves the problem of needing to keep them constantly engaged with new things to keep them from losing interest.
Look at sales in Japan. Nintendo can't get WM+ out soon enough in Japan to salvage sales. Unfortunately, I haven't heard of any support for it there. Tennis, golf, and Red Steel 2 won't sell much in Japan so for now it'll be all up to Wii Sports Resort.







