I think the problem is that Haskell is very much an academic project. It is the go to language for research in functional programming, and its strict insistence

I think the problem is that Haskell is very much an academic project. It is the go to language for research in functional programming, and its strict insistence on its principles has resulted in many advances in the field. In contrast, Go is a language designed by Google to meet their needs in programming code. This means that it takes some of the best concepts, pioneered by earlier languages, and combined them into a production oriented language. Personally, the reason I use Haskell is because some of the awesome stuff they have developed has not yet reached production oriented languages yet.