[osdev]

I think it’s pretty simple why you’d want to use Kotlin on the server; full stack Kotlin development: 1 language for both Android and Server(lowers time, costs, and you can share code).

And Kotlin multi-platform is making good progress, so potentially you can also build shared code for iOS and JavaScript. Again, it all comes down to time, cost, simplicity.

Lastly, I have to say, after using futures in Java/Scala, async/await in JS, Kotlin got it right with coroutines, channels and flows. I’m not exactly sure what the roadmap for concurrency looks like in the Java world(even with project loom, etc). While Java is moving fast(finally), I think it’s still weighed down by legacy stuff (nulls, mutable code, lack of expressions and more)

[treis]

The question isn't really if Kotlin is better or not. It is whether or not people will end up using it. And it doesn't really look like it's going to be a winner in the market.

[yen223]

The simple fact that Kotlin is an officially supported language for Android app development will guarantee people will use it, in my opinion. It will almost definitely do better than Scala in the long run.