I think I get what Cezar is trying to say.
Player buys token from Blizzard. $$ to Blizzard.
Farmers/boosters buy tokens, essentially play for free now. Still sell dirty gold on the side. $$ to farmers/boosters.
Player buys service/item using gold they got from selling the token (that they bought from blizzard) to the booster/farmer.
Boosters/farmers still come out ahead.
Blizzard now gets a cut.
Player gets what they wanted.
Win/win/win.