Yep, West Germany was much richer and
technologically more advance than SK and East Germany was by far richer and advanced than NK and we still got into huge trouble when we reunified with the East. We from the former West still pay lots of money to the East after moren than 20 years of reunification. Also, we were three times more populous than the East, SK is only twice as polupous as the North and most East Germans were pretty well informed, because it was rather easy to visit each other, particularly from the West to the East and most East German could watch West TV. In fact, I grew up watching East German TV as we my city was not far from the former border and they had great children's programming. The rest was just crappy.
Any kind of unification would cripple the South economically.