Discord's biggest sell is being able to spin up your own "server" for zero effort and for free. Some kind of federated Mumble that people could rent servers fro

Discord's biggest sell is being able to spin up your own "server" for zero effort and for free. Some kind of federated Mumble that people could rent servers from (or join their own self-hosted servers to) would be able to eat into some of Discord's market share but the free hosting is a huge draw ro Discord.