This is obviously true. That being said, it would enable opportunities for developers to use controls where a bridge can be made. For example, if your C# librar

This is obviously true. That being said, it would enable opportunities for developers to use controls where a bridge can be made. For example, if your C# library can be made into a Windows Runtime component then it could be run by C++, and I'm sure there are other ways of running C# code in C++ as well. JS would obviously be limited - it would be as limited as it ever has been. It won't be long before one can write Rust or Java or Closure and have it compiled to web assembly. At such time, you'd be able to have your components run alongside JS as I described.