Timed exclusive?! This is practically FORCING Microsoft to buy their publisher.
I'm trying to imagine Microsoft making an attempt to buy Warner Bros. Discovery. WBD is in the financial toilet so MS could get them cheap but I don't think MS wants to get into the movie studio business and also the US Government would not be pleased by MS trying to acquire of the few remaining independent big media companies in the US.
Comcast owns NBC Universal
Disney owns 20th Century Fox plus all their own properties
Paramount is the surviving company of the old CBS/Viacom properties
Warner Bros. Discovery is formed from the merger of Time Warner and acquired assets of Discovery
So there are only 4 remaining companies which control >90% of the US media, letting MS control one of them would be incredibly unlikely to pass regulatory muster