One of those strange phenomena: people who love capitalism but hate debt.

What platforms?

Facebook never federated chat. They did federate messages via email a loong time ago, but never chat. Google did.

Messenger never used XMPP and never federated. They had a half-baked gateway to allow third party clients for awhile as an experiment, but that’s all they ever did.

As a client developer, happy to hear feedback on existing clients and what you think is needed for ‘good’