It's still an improper invocation of Embrace, Extend, Extinguish regardless; only Call of Duty came along with this sale, so by your own logic, they still can't have a monopoly; there are several other franchises, owned by several other corporate entities that Microsoft doesn't own, that would fit on that list of yours; and IMO, Resistance was never good anyway, so if they want to make their own Call of Duty, they're starting from scratch, and they've got a decade to figure it out.