Not surprising. The Wii U is bad hardware and it has never sold well.
The lone reason mine gets any use at all
is when I want to play Smash. The dumb gamepad dies after 10 minutes if it's not plugged in and Nintendo has done a laughable job of producing games I'm interested in playing.
They made it a challenge to create games for and alienated themselves from third party support by releasing a machine with power that only matches 10 year old Xbox and Playstation tech.
Nintendo routinely goes against logic and does things their own way. Even Smash for Wii U, a game that has seen at least SOME positive influence from LISTENING TO THE COMMUNITY still has blemishes from downright bizarre decisions with online play and balancing. Case in point: http://kotaku.com/nintendo-deletes-every-stage-by-prominent-mario-maker-s-1766213101
They got cocky after the Wii blew up when everyone lost their minds over Wii Sports and the motion control fad. I'm so tired of their arbitrary policies and I'm hoping maybe they finally change their ways after this.
Other devs catch a lot of flack for not taking risks and failing to innovate (rightfully so in most cases) but Nintendo has been mostly absolved of similar criticism when in reality, they've been just as safe with their software. No, I'm not interested in paying for old Zelda games you "remade" with better graphics. Nobody is impressed with you botching the latest Mario Party game, and I'm not interested in another Mario Kart (another layup Nintendo consistently leans on). Yet another Donkey Kong Country game isn't going to save your console.
Get your shit together, Nintendo.