The question is appeal to whom. Large employers want you to learn popular languages so that you're a commodity in a liquid market. But that's not a signal of economic value; it's the reverse. It's saying "I'm entirely replaceable."

What you can predict is that those employers for whom clojure (or any other minority language) is either acceptable or preferred are deciding that they don't want commodity, low-margin employees. It's a signal that they prefer not to buy the mass-market offering, and ought to expect to pay a premium.

What that means is that if your only way of finding jobs is to be one of the mass-market crowd, you're unlikely to find a premium-paying employer because that's not where they're looking.

Jobs and market have a huge factor of 1. politics 2. synergy

Almost the only reason that python is popular and people do everything with it is synergy. The only reason that javascript is eating the world and any web dev has to know it, and people do everything with it is synergy.

A big reason for C# to have popularity is because it's for Microsoft (politics).

These are just some examples. Being used doesn't mean anything.

There were and still are a ton of PHP jobs. You tell me, is it because PHP is a great language and solves our problems? No, because it has synergy.

If you're good enough, you can pretty much choose what language/framework you work in.

Clojure programmers tend to be some of the highest paid[1] on average of any language, so I'd lean more towards a lack of appeal.

[1] https://survey.stackoverflow.co/2019#technology-_-what-langu...