Google has supported WebRTC since its inception. Because of Google's commitment, Chrome is a better experience typically. It has more features, for example.
Firefox WebRTC support is developing robustly. In the last couple years Microsoft and Apple have moved to support WebRTC, too.
So you now can join calls with Firefox, Safari and Edge, with limitations – you join smaller calls, without recording and screen sharing, for example. Android users can click meeting links in Chrome, and iOS users click in Safari.
We're looking forward to adding support, and more features, as Firefox, Safari and Edge continue to develop their WebRTC support. We're glad to now launch smaller call support on these browsers. Thanks to all our customers for their requests ;)