I wrote a blog post about the Wii U shortly after it was revealed 4 years ago. My conclusion then was that it would "fail" because of 5 reasons:
1) Bad Pricing
2) Bad Marketing
3) Unintuitive Design
4) A Generation Behind Competition
5) A Really Bad Controller
They ended up improving the design of their controller a bit over the original prototype (Seriously, circle-pads?), and the PS4 and XB1 ended up releasing earlier than I expected. Besides that...
I believe in honesty, civility, generosity, practicality, and impartiality.