Functional programming won't succeed until the tooling problem is fixed. 'Tsoding' said it best: "developers are great at making tooling, but suck at making programming languages. Mathematicians are great at making programming languages, but suck at making tooling." This is why Rust is such a success story in my opinion: it is heavily influenced by FP, but developers are responsible for the tooling.
Anecdotally, the tooling is why I gave up on Ocaml (given Rust's ML roots, I was seriously interested) and Haskell. I seriously couldn't figure out the idiomatic Ocaml workflow/developer inner loop after more than a day of struggling. As for Haskell, I gave up maybe 20min in of waiting for deps to come down for a Dhall contribution I wanted to make.
Institutionally, it's a hard sell if you need to train the whole team to just compile a project, vs. `make` or `cargo build` or `npm install && npm build`.
Anecdotally, the tooling is why I gave up on Ocaml (given Rust's ML roots, I was seriously interested) and Haskell. I seriously couldn't figure out the idiomatic Ocaml workflow/developer inner loop after more than a day of struggling. As for Haskell, I gave up maybe 20min in of waiting for deps to come down for a Dhall contribution I wanted to make.
Institutionally, it's a hard sell if you need to train the whole team to just compile a project, vs. `make` or `cargo build` or `npm install && npm build`.