With the current world setup there is a constant stream new gil being introduced into the world. Its up to you how much gil you're willing to sink though. A lot of players think that their high level should entitle them to massive amounts of gil. Sometimes it does, but don't come in here with a strategy that requires you to spend more than you earn, then blame the game mechanics as the sole reason you're slowly going broke. If you find yourself on the wrong side of the economy in a world that gives out free gil, then its you that needs to make a change, not the game.