And then Jabber came to fix it by introducing an open protocol, and Google started supporting it, and all was well. Then when everybody was using Google Chat they severed the Jabber compatibility, locking everyone in to their platform. Now we’re back wading around in enshittified shit and Jabber is dead.
It was promoted to me as a contender for Slack / IRC, not for the kind of direct messaging app that ICQ / MSN messenger was.