Don't know if the translators read these comments but A/S stands for "After Service" so they were discussing not only a monopoly on selling cars but also a monopoly on the after sales services like maintenance/spare parts etc. That's why Kang's father was delighted at first, he might not get monopoly on selling cars but he would at least get money for all repair services of the car in South Korea, until Sharlaan pulls the carpet out from underneath him by stating he has a monopoly on after Sales service ONLY on cars he sold. Not cars sold by the big corporation.