Could this be a bad thing for Firefox? Seems like Microsoft + Google is quite a rival to go against?
I speak for myself - I believe that decrease in diversity of implementations of the Web standard and drift toward a monopoly is harmful to our vision of the Internet and ultimately will hurt the Open Web.
If Edge had 35% marketshare I'd be more concerned, but nobody was using it, and web developers hated trying to make their sites compatible.
Good riddance to IE/Edge of old :)
It is probably up for Mozilla to make a choice: will we implement the standard or will we mimic the behavior of Blink for compatibility reasons (which may be incorrect in some cases).