I doubt it'll happen, it seems more like a hollow threat then anything, just someone trying to be greedy.
They'll lose sells if they drop a console, sure 360 has more sells and a larger user base then the ps3 but really, would anyone drop 1 out of 3 consoles or would you rather keep your product out for all 3 so people will be able to buy them.
I'm not including PC's in this cuz not alot of people play pc games or even own a pc thats fast enough.