A centralized system wouldn't have this problem since the only reason they can't just use another domain name is because of refederation. A great example of this happening is piracy websites, which notoriously get shutdown only to pop up five minutes later with a new domain.

This is actually a critical flaw IMO in federated applications as a whole. Not being able to change domain names makes your entire platform (as an instance runner) tightly coupled to the initial decision you make when first setting up the instance.