And a bit later he mentions “Not just all account servers; different kinds of services”. I have a feeling this has been overlooked in the recent discussions about Threads. The fediverse is an excellent base to launch a myriad of varied kinds of services, not all of them “account servers” like lemmy, mastodon, pixelfed, etc. Let’s also build more bots and automated services too :3 It could be games played through fedi, it could be statistics, admin tools, and whatever comes to mind.
This is the kind of thing that would be added value even for huge account nodes, and would probably act as a deterrent to want to change the rules of the game (making changes to ActivityPub). If you change the proto, your users would lose access to all the nice things that exist outside of the instance, quite the backlash, like what happened with reddit.