Microsoft makes a browser but the point people are typically making here is that Edge is just a reskin of Chromium.
IE was 2 browser families ago from Microsoft.
Edit: admittedly, "just" is probably underselling it a bit, but it's still a far cry from a completely new engine.
Parent said: IE wasn't killed because the web moves too fast -- and used the presence of Edge (or EdgeHTML) as the argument.
But both IE and EdgeHTML were killed because Chrome moved too fast for MS to be worth it to maintain its own engine...