often refuse to entertain chrome or firefox , let alone a Linux browser.
Most systems don't know the difference between Chrome or Firefox on Windows and Chrome or Firefox on Linux. This is doubly true since DRM has been implemented in the browsers themselves (hence why we now have Netflix on Linux). It's incredibly difficult for me to imagine what, in this day and age, you could do to a web based app that would make it run in Chrome or Firefox on Windows but not in Chrome or Firefox on Linux. And if your web based app only supports any one browser then, in my not-so-humble professional opinion, you've done it very wrong.