The biggest failing of the fediverse seems to be societal - federation is split along political boundaries even before the system really caught on. How can we possibly get out of digital feudalism if Eve will only let us talk to Bob if we don't talk to Alice. We need an open system that is actually universal like phones or email - both of which would be shut down or severy limited today for allowing all kings of unfavored characters to send heretical messages to each other, if they were not alredy well entrenched before the latest cultural shift.