Good point which makes the companies stance on abuse (ie obtaining power too fast/easy) in game play hypocritical and why RMTs are terrible design mechanics for games as they directly affect the games development directions. As you said, why are the drops so low? A common reason used before RMTs was that it disrupted the balance of risk/reward, resulting in poor game play. Though with RMTs, the concern is no longer that balance, rather it is the incentive for people to spend money in the store. This isn't new, Perfect World Entertainment as well as many other Eastern game companies have perfected this carrot by the use of clever walls, grinds, etc... to lead the player to the store to purchase their reward rather than earn it in game. That is why it is amusing to watch people complain about balance while at the same time defending these PTW practices.