Soundwave on 29 September 2014
I dunno, I'd suspect the people who still play their original Wii today are probably extreme budget shoppers ... in other words they ain't buying any $300 console (not from Nintendo, Sony, or MS).
And really it may just be an issue where they like to play Just Dance once a week when they have family/friends over ... and the Wii does that just fine.
Why pay $300 to play the same game in HD? That audience doesn't care what resolution their game is in.
Beyond that I suspect they'd far rather spend that $300 on the new iPhone.
