I wouldn't bet on it, but I think that while MS will try to make as many Bethesda franchises as possible PC and XS exclusive, TES and Fallout will remain multiplat, their sales potential on PS is too high to give up. PC and XS timed exclusive for them is very likely, though. Also because existing deals with Sony must be respected, so the first exclusive titles would arrive too late to help XS significantly against PS5.