The vast majority of chinese gold farmers and dealers are working "legitamitely" in the sense that they aren't involved in hacking individuals' accounts. Rather, hundreds of thousands of mostly young men work upwards of seventy hours a week farming instances and selling their wares on the AH to meet daily gold quotas, the sum total of which is then given over to a dealer to sell to North American and European players.

Also, recognize that the only way they can farm the gold in the first place is to do so on North American servers. Chinese gold farmers who service North Americans play on our servers and pay our subscription fees; they aren't going away even if Chinese WoW servers dissapear.