All of the enterprise US Intelligence Community developer platforms I worked on used the Atlassian suite. And, so far, all of the DoD ones I've been working on have used Gitlab.

Selling to military, spy agencies, and law enforcement is not in any way unique to Microsoft and GitHub.

This might not be concerning to you but they also had some run-ins with sexist and racist behaviour.

It was what pushed my hobby group to Gitlab, though I recently set up github for my company as a temporary measure.

And the NSA. And vendor-locking-in accounts to participate in what should be decentralized git for source code management.