[throwaway99797]

Google missed their opportunity to do this: they've had Google Meet / Hangouts / ... for years. They have the same backend infrastructure that can scale to thousands and low latency to everywhere. Meet already does this with a custom Google protocol in the browser.

If Google had just opened their APIs, they could have provided this to everyone...

[mcpeepants]

Don't forget about Google Fi (which, it seems sometimes, that _Google_ has forgotten about) which ties it all together with traditional carrier services too. Well it did until they sunset Hangouts, I suppose.