That would only be likely to happen when communities identify by their bias (see: "conservapedia.") Existing wiki communities tend to divide based on topic, wit

That would only be likely to happen when communities identify by their bias (see: "conservapedia.") Existing wiki communities tend to divide based on topic, without a lot of overlap. (See: fandom). A federated alternative to fandom.com is what I would imagine when someone says "federated wiki."