But in none of the responses is any large scale sustainable solution. In an ideal world, yes, everyone will use federated solutions. But articles like these are not helpful unless a mass market solution is done or proven.

Even jitsi cannot federate with bigbluebutton.

Though I like email, mailing lists and matrix(element) etc but world is pragmatic: workplace use of slack to whatsapp to signal or google docs.

It has become a habit to post in hn

1. DIY mailserver 2. Photos hosting 3. K8S

but people need to know Infamous Dropbox comment: https://news.ycombinator.com/item?id=9224