Rust will improve, of course, but as far as I'm concerned, it's not there yet (type system seems unfinished, lifetime management introduces some really crufty s

Rust will improve, of course, but as far as I'm concerned, it's not there yet (type system seems unfinished, lifetime management introduces some really crufty syntax, etc.). More importantly, its "advanced" nature automatically relegates it to the same land as Haskell, Ocaml or even Lisp, where it's harder to hire. Elixir/Erlang scales better, but it's a language where you will struggle the moment you need a bit of single-core performance — which you sometimes do, even in a nicely distributed app.