Forcing players to pay to keep housing is unfair.

[Dualgunner]

We'll just have to respectfully disagree on this point, I'm afraid. If a player is only going to use their house once a month, why even invest so much gil into it, or even own it in the first place? Like with the OP, if someone is going to invest millions of gil into an estate, I would hope that they would use it more than just once a month.

My issue is busybody thinking like this. Whatever someone does with something they invested millions to tens of millions of gil into is nobody's business but their own. Fact of the matter is, they allocated their time and resources into getting that house, and they got it before any competition managed it. In my mind 'fair' stops factoring into the equation after that point and it becomes a game of haves vs have nots.