At least the Zero series ended after 4 games. They quit entierly with ZX...or at least so it seems. The BN/SF series have been considered medicore by a lot of fans, they knew when to quit with these games at least while BN/SF keep struggeling forward (it'd be akward if they did release another ZX after I said this though, haha)
I might've exaggerated a little bit but I wasn't being literal with Capcom taking a decade for them to finish a game off. But they do seem to release more BN/SF games than any other games though. And that sort of feels as the other games are being delayed further.
I'm not going to lie to you, the X games were releasing pretty fast one after another as well, every 2nd year or so they released a new X game. And I agree with you on the Zero thing too. I'm not going to be entierly partial when it comes to this matter, I never was to begin with, actually...I was wonder why they'd keep this up instead of trying to balance it out a little by adding some more of that oldschool megaman we love so much.
And to answer your other question, by god, did you read any of my other messages...AT ALL? No, I'm not, in fact I'm only asking why the fortune isn't shared. I don't mind if somebody gets some.
I have a feeling about what I said about BN/SF being medicore is going to hit me straight in the face, but that's what I've heard and experienced.