This a 100%. If Haskell proponents focused more on stuff that is described in https://pragprog.com/book/swdddf/domain-modeling-made-functi... instead of algorithms a lot more devs could use it in their day-to-day job.
My company does everything in Haskell, but it's almost all just boring plumbing code. APIs, JSON, databases, HTTP stuff, HTML templating, etc. It works great.
https://news.ycombinator.com/item?id=21024494
As for libraries we use heavily (in no particular order): Yesod, Persistent, Esqueleto, Lens, Lens-Aeson, Hedis, STM, Wreq, Shakespeare, Hspec.