Which sort of underscores the monopoly point. There’s no universal free/cheap alternative to Meet, further entrenching Chromium.
It's free and open source, works everywhere, has stuff like background replacement, and doesn't require signup at all.
He provides a nice piece of anecdata there: for one-on-one meetings, you can just send people a link and usually they just join. Even if they've sent a link to Zoom or Meet or whatever, you still can say “hey, join this instead” and it will work. I haven't tried this yet, but sounds plausible to me.