I don't know if they ever had a chance at courting third parties or not with a more powerful machine. My gut instinct is that -- provided sales were decent (i.e. better than what we're currently seeing with multi-platform ports) -- removing barriers to entry would have facilitated more enthusiasm then we're currently seeing now and going forward. But of course, that's neither here nor there. For better or worse, the machine is what it is. The bigger concern to me going forward is not whether or not the machine can secure a Call of Duty 2013 port, but in trying to sell people on what the GamePad brings to the table.
Personally, I think they've done a terrible job thus far. And they put all of their eggs in that basket. They're selling a console right now at a loss at $350 that doesn't even compare all that favorably to hardware from 7 years ago, and the whole reason for that is because you're supposed to see the GamePad as a meaningful innovation much like the Wiimote changed everything over six years ago. I'm not convinced that this particular gamble has paid off at all.
That's it right there.
The value proposition with the Gamepad just isn't there with most people. They don't see it as the innovation Nintendo is selling it as. And to be honest, I'm not really sure Nintendo believes it is an innovation either, given how confused and weak their promotion of it has been.
And, to add further insult to injury, I imagine that the pad's where Nintendo is garnering most of its additional costs for the system. So they bet on something that isn't gaining them any mindshare or consumer interest, while spending a fortune on its R&D and production along with the system.