> Why don't we have a single language so that we can do cross platform development and abandon web browsers and javascript?

What does that even mean? What do you lack in regards to cross-platform from Java / Rust / Nim / Go / Python / Ruby / Haxe / ...? (I'm assuming cross-platform here means desktops, not microprocessors)

Specifically, yes, there are things that you may miss in every one of them, but it's not like we don't have the option to use them. What's the point in complete unification in the first place?