Korean conglomerate (chaebol) owners utilize interlocking relationships between companies in order to maintain control despite having only a minority ownership[0,1]. This can cause lots of corporate governance issues, such as when family disputes end up affecting companies[2].

0: http://www.esadegeo.com/download/PR_PositionPapers/43/ficPDF...

1: http://onlinelibrary.wiley.com.sci-hub.cc/doi/10.1111/1467-8...

2: http://www.bloomberg.com/news/articles/2016-09-29/death-prob...