Quote Originally Posted by Seraphor View Post
The fact that leaving an FC that you are the leader of somehow avoids this restriction is likely a workaround to prevent cases where people suddenly find themselves in charge of an FC they didn't mean to be, saddled with a house they didn't want to be responsible for, and yet unable to otherwise manage another existing FC house for which they were already in charge of.
If you already own a fc with a house and inherit another one on another character, you don't need a workaround to manage both of them. It's always been allowed to inherit an fc. Square Enix specifically made it possible to use the same account to buy a house for multiple fcs. What non-loophole situation was that intended for?