I think management would have to buy in on developer investment. People who want to work with Haskell, on average, seem quite devoted. I feel like those devs who really want to use Haskell at production scale truly believe in functional programming as a superior endeavor, also, most devs devoted to Haskell also love advanced type systems and are particularly drawn to deeper Haskell the more they do it.

Long statements, but I really do think employee retention and personal fulfillment would lead to a better working environment. So that is the way I’d argue it. Obviously a comprehensive sampling of performance metrics would be needed along with the more HR reasonings, but I think there are plenty of examples where Haskell is performing acceptably.