I don't understand this notion of Nintendo fans not wanting to buy western third party games. The real reason Nintendo fans don't buy third party games is because most of the time it ends up being a shitty port or a game that's 3 fucking years old. I mean you can buy these ports cheaper on other consoles. The Wii showed most western third parties half assing ports even though it was the best selling console. Although I'll give it to Unisoft because they actually do try, but the rest naw.
How do you solve a problem like 3rd parties...
This is a complicated issue and unfortunately, there aren't any easy answers. I do think that it cuts both ways and to only blame 3rd Parties is short sighted. My thoughts on the whole 3rd party situation is that while 3rd parties hold a good amount of blame, Nintendo fans at this point in time are essentially NOT particularly interested in 3rd party games or even non-traditional Nintendo games, or games that don't fit within the typical milieu. That being said, I don't think the fans per se are to blame, but rather Nintendo largely for not cultivating and diversifying its audience and library enough.
Going back 2 generations which was really the last where there was more or less parity between the consoles, the Gamecube still sold on average the least well in terms of the 3rd party games proportional to the install base. This is talking about the EA games including the Maddens, those Ubi games (Prince of Persias, Splinter Cells, etc) and many Japanese games as well. Really the only 3rd party games that did exceptionally well were those that were either exclusive (Tales of Symphonia, Rogue Squadrons) or semi-exclusive (RE4 and Viewtiful Joe) or had some exclusive content a la Link in Soul Calibur 2. Even in the mid 2000's, the audience was dwindling. But then Nintendo's conscious decision at that point to move away from the Red Ocean with the Wii both hindered and helped them. The sales were obviously nothing that any company expected and the 3rd parties were caught with their pants down.
At that point, I do agree that the 3rd parties really should have tried to make better games instead of half-assed rail shooters but those few games that did come out as strong efforts still didn't do well. I'm talking about something like Goldeneye or Silent Hill Shattered Memories... good exclusive "core" (for the lack of a better term, though I hate it) games that for an install base of 100 + million should have sold decently well. Now granted, most of that audience was the Blue-Ocean non-gamers and so forth and had no interest in an FPS but even still, that install base was absolutely huge. Everyone owned a Wii, even the so-called "core" gamers (again... stupid meaningless term.
) Obviously the non-gamers moved on and unfortunately for Nintendo that move was largely to mobile. The gamers looking for diversity... even those that may have stuck around during the Gamecube years sought to supplement their experience with Sony/Microsoft/PC though a good number retained their Nintendo consoles for Nintendo experiences. Finally, the dedicated Nintendo only group obviously stayed which brings us to the Wii U.
So where are we at now this most current generation? Well you guys all know. 3rd Parties are at an all time low and have abandoned Nintendo's consoles aside from a few exceptions, and yes, those games that show up tend to show up late or lack features. Sure there's been some great 3rd party games like Deus Ex HR, NFS:MW U, but again both of those showed up late, despite being the best versions of those respective games. But to be fair, there really hasn't been a clear demonstrable title during this era where a 3rd party has put a full effort into a game with parity to every other system and launched on the same day and date with all the bells and whistles as the other systems and so, yes we can't really for sure say that the audience isn't there.
But having said that, the Nintendo-only audience does frustrate me. Nintendo has at least tried somewhat to expand their portfolio. This is clear through publishing (and in some cases developing) games such as Xenoblade X, Bayonetta 2, Fatal Frame 5, Wonderful 101, publishing Ninja Gaiden RE (which was the most polished that fundamentally a flawed game could be) and Devil's Third (which in retrospect was a failure). These aren't seen as typical "Nintendo" games and yet none of these sold anywhere in the realm of even the faintest of Mario titles. In fact,
I wrote in a thread a few years ago about the "reaction videos" to the Nintendo E3 directs, and how there was a clear disparity of excitement. As I mentioned, Nintendo's fanbase that only own Nintendo consoles really have little or no interest in experiences that don't fit the typical Nintendo M.O, and those that are multi-console owners really have little or no incentive to play a 3rd party on a Nintendo console.
To sum up my rambling thoughts on this, I do think it's a problem that doesn't have an easy answer but I don't think 3rd parties are only to blame. I'd personally love to see more 3rd parties on a Nintendo system, but it needs to start with Nintendo taking active steps to fix it.