sovereignty != isolation

Microsoft sucks, but what exactly is the threat you’re trying to mitigate by not putting their Office suite on GH? Microsoft deciding to disappear it or take control of it one day? MS does a ton of business in Europe, so they have a lot more to risk than PR history for tools that the devs would all still have on their machines (and thus could migrate at any time to another code repo).

There’s not a readily-available European alternative to Github, and no, Codeberg is not one, because the value of GH is not just hosting code, it’s being a well-known place to find code. If you want a “European alternative” to GH, you’d first need to create an internationally-famous, known-by-all-developers platform. But that’s not “in scope” for their EU-Office tool.