you have to fit into the company's software ecosystem, if everyone uses php or python there and you do Haskell it does not matter if you're a MIT PhD that happe

you have to fit into the company's software ecosystem, if everyone uses php or python there and you do Haskell it does not matter if you're a MIT PhD that happens to be a Haskell core developer that can rewrite chrome in Haskell in a month, it just does not fit. That been said, there are definitely companies need Haskell developers, it just has less positions for a smaller pool of developers.