I'm pretty sure what OP is considering is that Haskell is well known for its usage in theory heavy works (where the domain is mostly well-specified, and possibly even beautifully so), but not well known for applications where you have to make unspecified, awkward, temporary and sometimes nonsensical updates (anything that so much as breathes near a layman). And given haskell's background as a research language, it makes sense for it to be biased towards the former. So the question is, by how much?