Assuming that people who have a lot of gil use RMT is wrong. Craft stuff, save up, make gil like other people who make gil legitimately do.
Unless everyone wants a house handed to them...? Even if there were infinite wards, if they don't have enough gil to buy from the server, they won't have a house.
Everyone with a sub and HW has access to the same crafts, the same MB, and the same legitimate resources.