Microsoft has committed in writing, in public, and in court to keep Call of Duty on PlayStation for 10 years on parity with Xbox. It made an agreement with Nintendo to bring Call of Duty to Switch. And it entered several agreements to for the first time bring Activision’s content to several cloud gaming services.
And what are the potential consequences of not living up to these commitments? Call me cynical, but I don't think a pinkie swear is worth much.