Yeah...this is really horrible. If SE has tight restrictions and correctly implemented house ownership, this should never have happened.

I know players are generally averse to a housing tax, but what if the tax is exempt for players owning only 1 personal and FC house per world which is as SE has intended?

Whereas for hoarders who own multiple FC plots on an account, each additional FC house would incur a hefty housing tax of, let's say 50% of its original land value. That way, hoarders would need to heavily consider if they are willing to pay that amount of upkeep just to own an entire ward. For those who already have multiple plots but aren't willing to pay the upkeep, they could be given a chance to relinquish those houses and get back 100% of its value up to a certain deadline.