[ErroneousBosh]

I don't know; COBOL pops up in banking all the time and Fortran lives on in a lot of specialised engineering applications.

Is there anything to be gained from rewriting it in Rust? Five years ago would there have been anything to be gained from rewriting it in Haskell? Ten years ago would there have been anything to be gained from rewriting it in Ruby? Fifteen years ago would there have been anything to gain from rewriting it in Clojure? Twenty years ago would there have been anything to gain from rewriting it in Java?

And so on, all the way back.