..or is Campfire/HipChat/whatever-else-is-left "good enough" to make it not worthwhile?
Those that don't give a fuck are using Campfire/HipChat.
Those that do give a fuck are usually hosting their own IRC.
Find a way to squeeze out both and you have a potentially nice business model. (Hosted IRC + nice web clients for paying customers?)
..or is Campfire/HipChat/whatever-else-is-left "good enough" to make it not worthwhile?