[michaelt]

I don't know for sure, but I suspect the key to success in videoconferencing is doing really extensive testing.

The users are going to try to transition from NATed-mobile-data to corporate-wifi-with-ssl-mitm while reinserting their USB headset and connecting an external monitor while screensharing with participants running five different OSes.

Maybe they've had time to do all that testing on Chrome, but they haven't got around to it yet with Firefox.