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.
I’m thinking of § 230 of the CDA [1], where the line between publisher/speaker and not can come down to editorial discretion.
[1] https://en.wikipedia.org/wiki/Section_230