As I said in the Xbox OT. It comes as a surprise but when you really think about it it's not a massive shift as PS games were going to end up on Xbox hardware very soon anyway as future Xbox hardware will have Steam. So every "xbox" starting with the ROG Xbox Ally will have PlayStation games with or without Sony's input.
Xbox Series sales are already dead, Xbox is leaving the traditional console market. MS are no longer competition against PS hardware and Sony games were going to end up on Xbox devices anyway very soon so might as well start cashing-in early. Especially with a live service title.
The console war is long gone, PS won that battle, Sony/MS are pretty much business partners now.







