uhh... F-Zero X?
I see what you mean, by the way, but they're just making what sells. One other thing about the rest of that list you gave though... Fire Emblem is getting a decent amount of releases, so I don't know what the hell you're talking about with that one.
For the record, I already mentioned F-Zero X, quite literally before your bold
As for FE, I'll admit that it's gotten more love recently, but look at how long it took for Nintendo to bring it over state side. The fact that it's very delay has created a trope means that it's not exactly well looked upon with NoA in the early years. Not to mention it's one game every other year. Ever since Melee, we've gotten about 5 FE games; the second and third GBA games, the GC and Wii games, and the remake of the first game for the DS. In 8 years, only 5 games have come out. Granted it takes time to make RPGs, at least more time than other games, and particularly FE games, but NoA didn't even bother releasing the older games on a GBA cart.
If there's one company I actually would never WANT to work for, it's probably Nintendo. They don't give two shits about a lot of their series. Just put out Kirby and Pokemon on the handheld and Mario and Link on the console and the machines print money. Plus, how often do they come out with an original series? I mean, seriously, I think the most recent ones are the Golden Sun games and Starfy games. I mean, I know Capcom isn't exactly innocent of it either, but at least they try a bit more. Dead Rising, Zack and Wiki, and because they were under the name once, you could also count Okami, Viewtiful Joe, and God Hand. Even if most of those games aren't a series, it was at least an attempt to branch out.