MS already have one; Visual Studio Code. The crazy has been coming a while.
That said, the core and infrastructure and all the stuff that makes it run is still a radioactive COM wasteland, and from experience trying to write an extension once, you can tell..
(Some sarcasm intended)
The other devs are still using a better terminal editor.
As a personal anecdote, I did give VSC a try when I had to write some TypeScript. Installed a couple of plugins for Neovim and I was both at home (which means, more productive) and still had the same functionality I used in VSC.