Can you list arguments why do you believe this to be likely?

Interoperability of Swift with the existing APIs and JVM is not impossible, but it is a significant barrier that needs to be overcome and needs very, very significant advantages to justify that.

Watch: https://news.realm.io/news/tryswift-chris-robert-end-to-end-...

IMO, kotlin makes a much better candidate to be "the" cross platform language for server / client since it supports typescript as a first class citizen, and a native target is coming.

You could use the same arguments in the article you posted to posit that everyone will be developing on a Mac.

It's not very convincing to me.

It doesn't seem to be particularly relevant; potential for server-side usage of Swift is one thing, but Swift apps for Android devices have quite different challenges and reasons for (non)adoption.

With Kotlin on the JVM and Kotlin Native on Windows, Mac, Linux and iOS I really don't see much of a future for Swift outside of iOS. Kotlin, though, will be everywhere.

I think both will find their place. Currently there are many languages that are interchangeable in many cases and yet they find their users.

I suppose that Kotlin outside of JVM has a similar problem to Swift outside an Apple platform. You lose a support for quite a lot of already existing libraries. Rewriting everything in Kotlin and Swift will take effort and by the time we'll get there not many will want to abandon their preferred ecosystem.

Your downvotes are due to the Jetbrains vote brigades here and on Reddit.