There is a serious risk using a programming language that is too different from majority of languages. Like Haskell, Erlang, Lisp variants. It requires a lot o

There is a serious risk using a programming language that is too different from majority of languages. Like Haskell, Erlang, Lisp variants. It requires a lot of effort to learn, development tools are scarce, and you can't easily hire a new worker simply because it's minor. Eventually, original developer left the company for one way or other, leaving a code and half baked documents only the early developer fully understand. Good luck maintaining those software. You can't. It's either abandoned or replaced.