You initially said that Nintendo should be third party now because Sony was before them. That wasn't the case.
The complete truth is that before that 2nd gen era (coleco vision and all), Nintendo was also a manufacturer, and made a first gen tennis console (back when consoles didn't use cartridges but had games loaded in the ROM).
Pretty fascinating stuff. :)
Basically Nintendo skipped gen 2 and so was open to releasing DK on 2nd gen consoles, that's until the Famicom came out ;)
Completely off-topic, but last year I got the TV-Game 15 off eBay from Japan boxed and complete. That means the only hardware (not counting all the redesigns) I'm missing is a Game & Watch and the Virtual Boy.
Why did I get it? Because I could .