VSCode came out of nowhere and took the market share previously held by Atom and Sublime Text 2
The folks I know who use Emacs or vim (including me) are by and large still using those tools since before Atom and Sublime got popular. We just have LSP, now, like VSCode does.
And VSCode came about mostly from Microsoft's push. They wanted an "in" for non Microsoft languages, and VSCode gave them that, as well as a Microsoft-provided environment for dotNet on Linux / Mac. This meant that JavaScript / Node developers could still be folded into Microsoft tooling (telemetry) without forcing them into the crushing heaviness of Visual Studio on Windows.
It was a really slick play. Still, it was an overall positive for the profession, and you can still use VSCodium without the telemetry.
I moved from vim to vscode. The main driver was an easier time writing extensions.
I've tried to switch to neovim twice since and gave up. Lua is nice and I did get into that the first time. Crashing and errors were rife though. The second time, which was very recently, it seemed like everything had changed again, all completely new plugins etc. And I struggled to do some basic stuff, I guess I've just forgotten the more in-depth file/window management. So it goes.
I'm primarily developing Elixir and Javascript and a few years ago I switched from Emacs/Spacemacs to VS Code. What pushed me over the edge were projects like VSpaceCode (basically replicating Spacemacs keybinding and menu system) and edamagit (replicating Magit). I've tried Zed and I'm quite optimistic about it, but so far not willing to put the work in to replicate enough of my setup.
The folks I know who use Emacs or vim (including me) are by and large still using those tools since before Atom and Sublime got popular. We just have LSP, now, like VSCode does.