Are you familiar with the story of EEE and XMPP? If not, I'd say that's pretty much what Google did to one of the first big federated chat networks.

No one is. Not even you. It's not a thing beyond it being a thing uninformed people repeat.

XMPP literally just finished their 2023 GOOGLE summer of code. Go check it out. The info is on the workgroup blog.

I personally started to use jabber about 2000-2001. The bridges/transports were ultimately great idea, but flakey as hell. Being purposefully broken constantly by AOL and Microsoft. Beeper anyone ? Not something reliable enough to pull people away from those official clients. Nor a service that could gain a critical mass in its own right. Also keep in mind back then, there was no jabber.social or jabber.world equivalent. And not just because those TLD didn't exist. There were a ton of different small servers, generally run by strangers you had no real clue about or real trust in. There was no official or semi official flagship servers, professionally run. That the average person could place any trust in. There was hope with Google chat that they would be that flagship server. They weren't. Google "defederated" and shot themselves in the foot several times. XMPP kept on trucking. What really happened to XMPP, besides me being logged in 24/7 365 for the last 20 years. To this very minute. Was they pursued a standardization path. They now compromise 10 to 12 IETF RFC. The standardization path meant slowing the speed of development WAY down. This is what killed the BUZZ behind jabber/XMPP. Not jabber/XMPP itself. Burdened with the requirements of standardization XMPP developed much slower in comparison to Skype discord etc all.

Truth is, these days tons of people use it without even knowing. It's in IOT an SIP systems outside it's original scope of personal IMs.