> even newest .net 5 is much more cumbersome compared to eg. golang (important for startups).

FYI .NET 6 + C# 10 has a ton of work invested into removing the "enterprise boilerplate" experience and making the language and frameworks more akin to node or go in terms of effort/LoC required to spit out a program:

https://docs.microsoft.com/en-us/dotnet/core/tutorials/top-l...

There's also a few epics that are specifically focusing on .NET as a compelling cloud framework: https://github.com/dotnet/core/issues/5397