

I guess it doesn’t really work as described. The data that’s valuable is your content history & unique username. There’s no way around having to migrate/store this somewhere, and it shouldn’t have to be replicated by every node. So basically we just need a solution for porting account data from one instance to another securely and accurately
Well…
If you follow the link to fedidb, refer to the “mau” monthly active users. Do some brief math and realize that lemmy.world accounts for about 50% of all active users
Email market share is harder, but many estimate that Gmail accounts for over 40%. Many many orgs use Google apps to make custom branded gmails with their own domains too
This is the typical “business power law” that states that the top player should control about 50%, the second player about 25%, etc. This is just kinda how the world works