that ship sailed a long time ago. Nintendo will need to partner with third party publishers for now on if they want content for wii u.
People often cite that the lack of 3rd party games as a factor to the wii u woes - however - multiplats have very little effect in driving hardware and software sales - as individuals often buy them elsewhere, so it is a lose - lose situation for both nintendo and 3rd party publishers
So what can they do? There best chance is partnership programs like Sonic Boom and Lego City undercover. However, they will need to increase the number of partnerships to fill the droughts.
Furthermore, Nintendo's content output for the wii u is abysmal. How can you expect t external support, when you, yourself, are failing to support the console itself. It is an area they need to work on for both the 3ds and Wii U. The Wii U's destiny may be already set - but they can use the platform to set up a strong foundation for their next endeavor.
