Back in the 90s, every University had its own mailserver, USENET server, etc. These offered authentication to any user in the University, and each was federated with other institutions and the internet as a whole.
I'm surprised Universities haven't set up a federated network of ActivityPub servers, with each University hosting its faculty and student accounts on its server. The signal-to-noise ratio of a University-only network would be amazing.
> The signal-to-noise ratio of a University-only network would be amazing
Ha; no. It would be students self-censoring to avoid anything that could draw a universities' ire... while they meet up on Discord to share their actual thoughts, cheating techniques, personal feelings, and date nights. It would be University LinkedIn.