Horror scenario
Imagine for a moment Microsoft owning Chrome. The horror of Christmas past. The path to the end of the opensource Chromium.
That's not fiction. Microsoft is the only company with enough money and a search engine, that can be used to fund the billions per year needed to develop Chrome.
I've lived through the 90s and 00s and seen the impact of Internet Explorer, actively preventing the success of any operating system other than Windows.
No, thanks. I strongly prefer the most popular web engine to be opensource and Microsoft isn't the one to do it, as they never did.