Rust is a simpler language than Haskell. You can’t write an os in Haskell. Rust is a replacement of c and cpp and it’s well suited for that. Rust embraces zero cost abstractions which none of the languages you mention do.

You need to wait a bit. Tokyo is a low level abstraction. People will build on top of this. Let’s be real, it’s the most promising language of late.

How long did it take for erlang to mature. Rust has come insanely far in the little time it had. Give it five more, you’ll be surprised.