I don’t think so, the brand is still valuable and they would transition to focus on pc and OC adjacent upgrades with software for the pc market only before they let Xbox actually die.If Xbox dies though... Would it matter? They'd corner the market anyway
M$ still has very valuable resources to produce hardware that Sony could use to speed up and reduce cost on rnd immensely. It’s a win win, if bmw and Toyota can get together and produce a car surely Sony & M$ can make a console together.