MSIL was designed to support plenty of languages, including C and C++, which WebAssembly advocates tend to never mention.

As such there are plenty of MSIL and CLR capabilities not yet fully exposed in C#.

One of the improvements in C# during the last decade, has been exposing low level coding abilities into C#, which is nothing more than taking advantage of those primitives originally designed for C and C++ support.

Likewise, .NET also had support back in 2001 for FP languages, thus TCO.

https://news.microsoft.com/source/2001/10/22/massive-industr...