The show Misaeng on NETFLIX is a great look inside a chabol. It is like Mad Men in presentation of characters but is fantastic in the description of business competition on an internal company level and externally throughout the world.
The isolationist anti business types here would do well to watch it for the simple purpose of learning the competitive challenges American companies face every day.
https://www.imdb.com/title/tt4240730/
I might just go watch it again