@rolle I am part of the generation that knew Jabber, that was happy to see Google embrace the Jabber/XMPP protocol: anyone with a gmail address had an XMPP instant messaging account interoperable with all other servers.
And one day gmail closed to other servers. Most users, already on Google, then asked others to create a gmail account to continue communicating.
I don’t want to go through that again. “Embrace, extend, and extinguish”, again.