Check the techempower benchmarks mentioned all over any .NET performance article. They beat on Linux nearly any other tech stack in the performance game. NFRs like debugging, monitoring, etc are all there.

From my personal perspective, roughly 75% of all applicable (non-Windows-UI) .NET greenfield project go straight on Linux. The brownfield/maintenance situation is surely different. Companies are not married to the Windows stack when you get the alternative for free. And R&Ds just follow that.

.NET is on Linux and performs excellent there.