I don't see why the future wouldn't be polyglot, in the sense that there isn't one language as dominant as Java has been. There is now much better language int

I don't see why the future wouldn't be polyglot, in the sense that there isn't one language as dominant as Java has been. There is now much better language interop than in the past, e. g looking at C interop in Julia and Java interop in Clojure and other JVM languages. Using HTTP on distributed queues on less unreliable, faster networks than in the past makes building distributed systems using many different languages easier (SOA, Microservices). On the clientside there are strong proprietary ecosystems which dictate the use of a specific language (more or less), Android, Windows (C#), Apple (Obj. C, Swift). Therefore I think it is plausible to assume that no single language will (have to) become as dominant as Java has been