And we briefly had interoperable text chat with XMPP until the big players dropped support for it. The protocol already existed, it worked for a while, and then

And we briefly had interoperable text chat with XMPP until the big players dropped support for it. The protocol already existed, it worked for a while, and then companies decided it wasn't in their interests to stick with it and the interoperable textaverse collapsed back into silos. https://en.wikipedia.org/wiki/XMPP#Non-native_deployments https://en.wikipedia.org/wiki/XMPP#Non-native_deployments