I'm not saying there is no apps written in .NET. I'm myself an ex .NET developer who worked for large companies and govt in .NET. I'm talking about datacenters

I'm not saying there is no apps written in .NET. I'm myself an ex .NET developer who worked for large companies and govt in .NET. I'm talking about datacenters infrastructure (routers, watchdogs, monitoring, deployment processes, ...), Usually none of that part is based on windows