Having had to work with these guys, and then maintain their software when they inevitably get bored and/or leave for more money elsewhere, no. Usually when these guys leave, their stacks/projects are the first to get rolled into the monolith and/or rewritten in the company's lingua franca (python)
On the opposite side, startups building on difficult languages like Haskell, Elixir, Erlang have a built-in bias towards hiring a team that can get a lot more done with a lot less people. Great for startups. Terrible for enterprise.