I imagine the biggest audience is corporate IT, especially in situations where Windows users vastly outnumber Linux and they don't really want to expend too muc

I imagine the biggest audience is corporate IT, especially in situations where Windows users vastly outnumber Linux and they don't really want to expend too much effort on it. Set the dev team up with Ubuntu, integrate them into whatever enterprise MDM solution they use (most support Ubuntu these days), tell them to use Edge to access the Intranet & other corporate websites, job done. But if you just want a Chrome-y browser, you might as well just use Chromium itself. It's a bit more pernickety than Firefox (particularly if you want to have accelerated video) but it's not dreadful, and likely has first-class support from your preferred distro.