A gil sink is not for everyone and is only hard to obtain for those who don't play the game of gil-making. The golden mounts were implemented as a way to drain away some gil. Yet for the people who engage in making gil will always have more gil than they know what to do with as they can just throw a few million away to buy pentamelded gear because its less time consuming than actually doing the melding and gathering and crafting themselves. There is even some more notable players who are gil capped and are basically billionaires.