As common sense as this is: Madcatz and co. would be losing so many potential dollars. Makes me think it won't happen.
Will they really?
I think that even with this driver they wont see a drop in sales, anymore than the official PS2 adapter hurt sales of PS3 fightsticks.
Regardless, people are still going to buy madcatz sticks regardless which version is sold.
Besides that, there are quite a few users here and generally in the FGC that own several sticks. I am pretty unconvinced that over the course of a generation, these people wont be buying another stick, driver or no driver.
This is more a way to ease into the platform. If sony were smart, they would mandate it for this title.
Unlike with logitech, Madcatz is already an official Sony partner, So it doesn't effect Sony either way.