The problems in North Korea are not so simple with straightforward solutions, when we look at them from the perspective of the actors involved. For the average citizen in North Korea, there are no clear avenues to political influence that don't increase rather than decrease personal risk. For the people in North Korea who do have significant political influence, from a self-serving perspective, there are no "problems" with how North Korea is run. North Korea's problems might be simple to solve from the perspective of an altruistic Supreme Leader, but they're hard as coordination problems. Some of our societal problems in the developed world are also simple from the perspective of an altruistic Supreme Leader, but hard as coordination problems. Some of the more salient differences are that those problems didn't occur due to the actions of non altruistic or incompetent Supreme Leaders in the first place, and aren't causing mass subsistence level poverty.