I noticed Win 10 OS is now like a desperate shoe or car salesman also.You missed one. When you click "set as default browser" in Firefox or likely other browsers, Windows 10 will only take you to the defaults page where you can change it. Once you select a browser other than Edge, Windows will ask if you're sure you don't want to give edge a try. The option to switch is in small print below the big, stick with edge button.