It’s effectively an indirect pay to win model. The real money goes to Blizzard, then Blizzard has subcontractors perform the service in exchange for fake money. But, instead of Blizzard paying the subcontractors directly, they give the means of payment back to the person purchasing the service.
That way Blizzard can deny that they are providing a pay to win service. The gearing system is not going to change. Blizzard is unethical and the system is corrupt. Prove me wrong.