I disagree.
All that does is price people out of player housing. Perhaps this may come as a shock to you, but most players aren't like you and I with hundreds of millions if not hundreds of billions of gil. New players are joining quite often lately, who don't have anywhere near those kinds of resources. More often than not, the average player is lucky if they have 10-20 million on hand at any given time.
I do believe something needs to change with how housing is handled, but increasing prices just limits who gets to engage in the player housing system. That's not a solution, it's an arbitrary obstacle to the system itself. And honestly, it doesn't help when a single player monopolizes multiple homes that could each house another player or free company.