I wouldn´t make any assumptions based on the opinion of a single developer.
As much hate as some people have towards Nintendo, it´s clear that a few developers like Ubisoft, Disney Interactive and 505 Games made a lot of money from their Wii games.
I doubt that Nintendo is so short-sighted about giving 3rd parties support, maybe that was the case a decade ago, but they surely learn their lesson with the Gamecube. In fact, today many 3rd party developers just don´t want the extra job to create features in their games suitable to Nintendo consoles, be it the 3ds or the WiiU. It´s just easier to make similar games to PS3/Xbox360/Vita, no need to use touch-screen or several motion controls options. These features alone would require not only more time for programming but also for testing, then increasing, still only slighty, the cost of production.
Producing a game for a Nintendo console is a different job. Like the developers at Ubisoft right now are claiming that "they don´t know what to do" with the GamePad for WatchDogs. The game was been produced with PS/Xbox in mind, making the game for the GamePad is a tottally different approach, taking this approach may not cover the costs of it, after all the install base is still little and it won´t grow fast at least until Nintendo big games come.
We should also consider all the partnerships that Nintendo has been developing for the Wiiu, also. Platinum games projects like Bayonetta 2 and Wonderful 101 would never see the light of the day. Monolith, Retro, Mistwalker, Level-5 and a number of indie developers are other studios that are taking advantages from that partnership also.
After all, this is a big market bloated with developers everywhere and it will be impossible for Nintendo to please all of them, simply because only a few developers think like them: gameplay as the basics, visuals after. The dev who just care about visuals and cinematics will go for Xbox/PS, the devs who needs or wants to be creative will give Nintendo consoles a go.
