In 2012, artist Thea-Mai Baumann signed up on IG with the @metaverse handle. Just days after Facebook rebranding (9Y later!), she had been blocked for "pretending to be someone else." It's clear we need a new tech-agnostic mindset if we don't want to be kept hostage of a dystopian, advertising-fueled XR nightmare (check the Hyper-Reality movie for visual reference).
Most metaverses provide immersive and fun experiences, but they also prevent users from escaping. They're 3D gilded cages, intentionally built to lock users in.
There is no metaverse. If anything, what we have today is a MULTIVERSE. And that's bad news.
Interoperability may not be a technical metaverse requirement per se, but it should be. OMA3, O3DF, MSF, etc, are doing a great job in discussing standards, however, we still haven't fixed some of the Web 2.0 interoperability issues (your iMessage app is pretty useless on an android phone), let alone metaverse's.
It's a nuanced concept, and to a certain extent, we don't even need full interoperability. We may be ok with not being able to wear our Chewbacca skins during the virtual Monday meeting with our boss, but when it comes to metaverse interoperability, that's where I draw the line.