XMPP wasn't adopted by large organizations who valued interop and federation. They valued the implementations, but almost invariably used it to build a walled g

XMPP wasn't adopted by large organizations who valued interop and federation. They valued the implementations, but almost invariably used it to build a walled garden. I'm not entirely certain why this was, but I suspect that valuing extensibility over interoperability (or the perception of it) was part of it. Optional extensions and interop with hosts that used a different set simply gave hosts/operators too much to think about in terms of deploying the service for users.