I see quite an opposite. There are new languages to replace some old, but old stay. And one could say that JavaScript today is almost different language than ES

I see quite an opposite. There are new languages to replace some old, but old stay. And one could say that JavaScript today is almost different language than ES6 was. By new coll languages I mean Go or Rust. Java and C# are still prominent in business sphere. And I can see push of functional languages as well, such as F#, but that is not so big pressure. What I also see is big fracturing in ecosystems. When I started developing, I used .NET. I could make WinForm application for Windows and WebForm for Web. Now there is MVC, Razor Pages, Single page apps (where you have to choose from many JavaScript frameworks). For Desktop app you can write WinForms, WPF, but Electron with .Net seems to be also popular now. It seems no two companies are using same stack anymore. For me it's becoming quite overwhelming.