Maybe its the architecture, when they start making new, next gen games with GPGPU in mind porting to wii U would be less troublesome. Also a number of devs (bethesda for one), still have that extremely stupid stigma that mature rated titles don't sell on nintendo's platforms. The only thing that will sway them is either success of another 3rd party title, like say GTAV (if it was ported to the system day and date), or if the wii U had a large enough install base so they think its worth the investment anyways. If it this stigma, then nintendo's best bet is to cover the cost and outsourcing of some of the big ports, otherwise it will just be a cycle of
Devs- our games don't sell on wii U
Wii U owners- we don't buy your game because you never bring to wii U on time or in the case of the wii you just gif us poor quality spin offs.
I'd like to think developers aren't just extremely bias and its mainly just a case of the architecture being more appropriate for next gen ports vs current gen ports. But then when the architecture isn't a problem, the power difference will become one... Nintendo should have just made the wii U truly next gen system i terms of the power leap, sold it at $449 to all the Hardcore fans at launch then dropped it to $379 when sony and microsoft systems arrived. We wouldn't have all this uncertainty and I probably would have bought one by now.
Most of the world is in a (post-)recession. Consoles are (second line) luxury products - the first category to be hit in any economical difficulties. The mainstream consumer is very unlikely to buy a console at 449.
They barely did in pre 2006/2007 when the good times were rolling by. It could take another 3/4 years before such economical time are reached again.
Nintendo is probably making the smart move by keeping cost low.
I think a system can sell a good 8-10m in its 1st year without the attention of the mass market. This was the case for thw 360 which might as of had zero games until gears and the ps3 which launch at $600. When the mainstream consumer is ready to update, the system will be at a cheaper price and actually have the games to entice them which they can't get on current systems (Mario Kart, Destiny?-Star Wars 1313, MSG, AC4, FF etc- the mainstream AAA titles). It will be a better investment for nintendo in my opinion, not only in long term system sales but also from revenue of 3rd party game sales.