I really think the alarm about Edge adopting Chromium is silly. Microsoft is more than capable of forking the project, so using it does
not give Google more control over the web.
What exactly do people think is going to happen? If Google starts doing strange things thinking they can because "everyone uses Chromium", then downstream just won't adopt those changes, and then there will be two Chromiums. All the panic about a Google "monopoly" of the web is absurd. Google lost the ability to do anything like that the moment they open sourced the project.