All the functional programming suffers the same curse. Apart from a small set of libraries (usually standards and pure algorithms), it’s much faster to write your integration than to bring someone else version. And it’s often easy to vendor the logic you need. You won’t see the minipackages from JS/Rust world or the big libraries from C++/Java.

You write something and it stays written, mostly because everyone moves the logic far away from accidental complexities, so maintainance is very low.

I've seen certain fintechs using Clojure and I'm not even in a tech hub, I'm in South America. Not to say there are many, but definitively I've seen 0 jobs for Raku.

Clojure seems more popular than other FP languages such as Haskell or even F#