alt Hacker NewsLegally? I don’t know.
More loosely, the fact that they deem this to be an appropriate action when it comes to their own interests would seem to condemn them if they refuse to take it when it comes to others’ interests, particularly those with whom it has a relationship of trust in any capacity.
Outside of legally, I’m not aware of any framework where “creates an editorial responsibly” makes sense.
Even beyond that… most business relationships wouldn’t involve an expectation that Microsoft does things for other entities that it does for itself.