Corporate is a huge, huge part of this.

Lots of people working just use whatever browser is preloaded. In addition, you can't even download another browser in a lot of environments.

Does that chart differentiate between before and after edge internals became chromium though?

Does it matter? It seems like distribution is more important than the internals.

When people say that Google killed the Edge browser they generally mean that MS gave up on maintaining their own browser engine and the world moved that much closer to a web monoculture. To put this in historical perspective, a reskinned IE would not have been a meaningful or useful competitor to IE.

I don’t think it’s a meaningful comparison because Microsoft has the resources to fork Chromium if they need to. But since it works pretty well, there’s little incentive to do that. It would be like Electron forking V8 for no reason.