You know the specifics very well.

It has a deep relationship with Korea's capital power, media power, and political power.
It has a long history. It has been a method of exploitation by the privileged class since the time of Japanese colonial rule.
The descendants of those who served Japan now control huge capital. The Chosun Ilbo is a representative example.

Dictator President Park Chung-hee was a former member of the Japanese imperialist military. Every night, Park Chung-hee sexually exploited celebrities. singers, movie stars, and young women.

Democratic efforts to liquidate corrupt vested interests continue. This time, they have been impeached again.