[neonsunset]

> С#, but then you lock-in to Microsoft.

What kind of lock-in do you have in mind? E.g. the best serverless target for .NET is AWS Lambda. The often preferred IDE nowadays for .NET is Rider, some people use Neovim or Emacs. This statement is demonstrably false.

Java and C# are also different, targeting paradigms at a different level and providing different experience (.NET has smaller ecosystem but more "streamlined" experience, at the level of Rust and Go tooling, often better than the latter and more mature/stable than the former).