[cortesoft]

Sure, and what we have been doing to solve this old-as-dirt problem is people pick the big, centralized, social media companies to have their account and identity at, so that they know they will have a persistent identity.

If we want to avoid that, we need a solution to the old as dirt problem.

[jrm4]

But again, I think it's already reasonably solved, by the solution we have now, for email.

Again, a universe of difference between e.g. Twitter (where anything can be revoked and they have ultimate power) and the problems with e.g Gmail (you take some care, you just start over, you start your own server.)

As I tell my students -- from a technical POV, mails from gmail.com and mails from jrm4.com (my personal domain) are just about equal on the Email protocol. This is pretty remarkable and a pretty good system already.