Has it ever happened to a (big) company that the core tech founders wrote things in Clojure, and all of those people moved on and things did NOT get rewritten in something else? I've mostly seen Clojure success stories where the Clojure founders were still part of the company.
Feels like we're building up to Microservice CV driven development (imo the big idea is bounded contexts anyway, an extension of cohesion).
That said there are instances where niche technologies do save companies money:
Ultimately many "niche" solutions have a similar fate to this:
Most tech have applications where it’s justified. Just make sure you ONLY use it when it’s justified is my punchline really 😊