I worked in two F500 compagnies both are using k8s, Docker / grafana and Go. They also use C# but not in the cloud / operations / infra world.

Go talk to some SRE team in F100 and F500 and ask them what they think about C# infra side lol.

The fact that C# was running on Windows only until 2 years ago explains why.

I only work for Fortune 500s, on project scale where license costs are a tiny drop regarding overall project costs.

Plenty them do run production servers on Windows.

You forgot there are 498 left to check.