I hope ur right but with the way MvCI is looking and the radio silence following Ed's release I wonder if they've stretched their resources too thin.
If SFV was successful enough to fund an S2 I don't think MvCI's potential bomba would force Capcom to cease development on all fighting games. Logically, the opposite would happen and they'd put all their eggs into SFV's basket.
I think the radio silence for SFV is one of two things:
1. Resources are spread thin with MvCI under development so they're giving us what they have done.
2. They're saving up content for a bigger update to gain some media attention and possibly cleanse people's palates regarding the game. Constant, small updates are good for active players but they don't attract those who aren't already playing the game.
The difference between S1 and S2 was Capcom had to push out updates constantly because SFV was metaphorically hemorrhaging to death. There was a lot of basic shit missing and lots of stuff didn't work correctly.
SFV now is probably where it should have been at launch. That's not saying SFV is flawless and everything works fine but its release wouldn't have triggered a new wave of Capcom hatred that threatens to sink their other flagship fighting franchise. SFV is about "par" right now, not exceeding expectations (inb4 wheres arcade mode tho).
So since SFV is arguably in "stable" condition Capcom might want to build to a bigger update because SFV will only lose players over time with steady, smaller updates.