I think Clojure will be fine. It is slowly and steadily growing. I honestly think it has reached well beyond the point where it can fade away. People always bring Common Lisp as an example and mention so-called "Lisp curse", etc. but if you follow and analyze the history of PLs - you'd probably realize - Clojure is a natural next evolutionary step of Lisp.
The industry desperately needs languages like Clojure and Haskell. Haskell being somewhat more "academic" and a bit "impractical" (I should emphasize the double quotes: Haskell in the right hands can be extremely, dangerously practical) never going to reach the status of a mainstream language, whereas Clojure just might. Realistically, it probably won't ever become top ten in TIOBE (or whatever similar) index, and that is totally okay. But it is pretty good already, and it is arguably better than Python and Ruby, Java, Javascript, Go, C#, etc. Clojure is Haskell's "worse is better".
And look: it already has more conferences and meetups (more than Elixir, Elm, OCaml, Haskell, Groovy, maybe even Scala) around the world (almost every European country now has its own seasonal Clojure conf.), it has over a dozen of books (and more coming), more podcasts. Clojure is a niche, but it is slowly become more popular.