That's only a chat functionality, I believe there's more to a community than just the ability to send simple messages, imagine an invite-only forum, an invite-only marketplace, or decision making platform. Everything still being encrypted e2e, so the forum messages are only visible to the members of your CCN, the decisions are only between your CCN members and that's the same for everything else you can think of. Videos, music, doesn't matter. It's all there for your Closed Community Network. There will even be the ability to run lightning nodes controlled by the whole community