Nintendo's stuck in a vicious cycle in which publishers just don't find it worth it to develop and market WiiU titles. The publishers know that almost nothing they've tried to make WiiU versions of games stand out have either caught on to either the 'Nintendo' gamer or the rest of the gaming population in general. It makes the platform inherently risky - so they stick to what they know has consistently worked within the PS/Xbox brand.
Creating WiiU versions of games isn't hard -- it just takes time and focus away from versions that will make up 90-98% of your revenue anyway.
Seeing as Nintendo makes peanuts on 3rd party licensing, and makes nearly all its money on 1st party games, console sales, accessories, and amiibo now, Nintendo should slash their licensing/royalties. If publishers know they'll make 50% more on a unit sold of a WiiU version of a game vs unit of a PS/Xbox version of a game, maybe they'll be give the Nintendo platform another serious look and actually promote and properly support their presence.
I predict NX launches in 2017 - not 2016
