@strypey well, if you want to try to convince other AP loyalists that AT’s not proprietary just because specs have been published and they’ve let people know about the relatively infrequent breaking changes, go for it, but my impression is that most people think protocols controlled by a single company are proprietary. But whatever, if the analogy don’t work for you it doesn’t work for you!
Thr impression I get from people who are looking at setting up relays is that there’s no way they’d do it on a fediverse infrastructure so I’m not sure why you think otherwise. AP isn’t good for flat all-public networks and that’s what they’re interested in. In practice it’s probably a moot point because I don’t Bluesky’s going away any time soon, but time will tell!