

Centralization is a weakness
While I agree with the basic premise of this, I think this is all-the-more a good reason for design solutions around this problem to be discussed so that more competitors can exist. If the fediverse is to expand, there needs to be easy non-technical ways for users to start up a multitude of instances. More of these types of services actually reduces centralization, in that sense.
Probably. In all honestly, if you are a hexbear user, I’d be keeping a careful eye on who owns the domain when it magically pops back up.