So many touting that Wii U would hit 10 million sold by the end of 2014. What happened here people? 

It didn't happen, that's what happened.

Nintendo choose profit over sales. No Smash Bundle, No Price Cut, No real anything really that made the wiiU super appealing apart from their games

No pricecut, SSBU after SSB3D, no Xenoblade, loosing all third parties.

I guess with Mario Kart earlier in spring, SSBU being released before the 3DS episode and a price cut they would have sold 10m+.
But somehow Nintendo cares more about becoming profitable again than about marketshare and still refuses to release broken games.

At the current performance, I am not sure if Nintendo should release ZeldaU and Xenoblade on WiiU or their next next-gen-system, to be honest.

Yeah that's a sensible admission. 

Nintendo play it safe. I have got to the conclusion that they give up and trying to get everything they can from the console and move on.

And if not than what?

Worst thing Nintendo could do right now is to really piss of the actual fanbase. And what about the games themselves. Put them on halt? For how long? No, the beast thing they can do right now is show actual support, try to make some money and just do it better next time.

But doing nothing for Wii U wouldn't be a smart move.

If Zelda U and XCX wont generate profit they still could remake them for a next gen handheld or console.

The question now is: will the WiiU reach the 10m units before the Vita?

Then not. But I doubt both games will push the WiiU by a huge amount and I think having both games at launch for the new console could be better for Nintendo.

I can understand that current owners want Nintendo to support the console, though.