I see this as one of the effects of European colonialists on East Asia and South East Asian colonies. The practice of colonialist generals/warlords, typically of a naval background of using brothels as a place/culture to bond with other warlords/generals and their local puppets is the predecessor of the current "elite level" business culture observed in these former colonies.
For a more contemporary example, Thailand did not have this sexpot/sex tourist city reputation until after the Vietnam War. It was the exploitation of Thai beach resorts and cities as RnR locations for US soldiers that created the current conditions.
I see this as one of the effects of European colonialists on East Asia and South East Asian colonies. The practice of colonialist generals/warlords, typically of a naval background of using brothels as a place/culture to bond with other warlords/generals and their local puppets is the predecessor of the current "elite level" business culture observed in these former colonies.
For a more contemporary example, Thailand did not have this sexpot/sex tourist city reputation until after the Vietnam War. It was the exploitation of Thai beach resorts and cities as RnR locations for US soldiers that created the current conditions.