Unfortunately for us players, it’s in ArenaNet’s best interests to ensure the vast majority of players are not wealthy. This would entirely undermine their buy-to-play model and their reliance on you purchasing gems. Were gold readily available they would inevitably be unable to fund their Living World teams because no one would buy gems, they would simply convert them. Due to this, the mechanics the game has in place are all designed to ensure wealth gain is incredibly slow.

Lewis B., “In Search of Guild Wars 2 Gold“

 Slowly MMO designers realize that massive immaterial delocalized economies modeled after the real world are doomed to failure.