On the desktop, Firefox has about 6% marketshare, and Edge, the Windows default, about 11%.
On mobile, however, Firefox is at 0.5%, and Edge at 0.3%.
A lot of people only browse the Web on a mobile platform. And the ones using those tend to use the default browser bundled with their phone; if what they have out-of-box works, they’re not going to install anything else. Apple bundles Safari, and Google bundles Chrome, so that’s what gets used.
https://gs.statcounter.com/browser-market-share/mobile/worldwide
According to this:
On the desktop, Firefox has about 6% marketshare, and Edge, the Windows default, about 11%.
On mobile, however, Firefox is at 0.5%, and Edge at 0.3%.
A lot of people only browse the Web on a mobile platform. And the ones using those tend to use the default browser bundled with their phone; if what they have out-of-box works, they’re not going to install anything else. Apple bundles Safari, and Google bundles Chrome, so that’s what gets used.
Chromebooks are frequently used in US schools, this has to screw the statistics.