It's a bit hard to rise up when you've got nothing to rise up with and no energy through lack of food to do anything other than survive, or knowledge of the outside world to do...well...anything. Hard to imagine the daily life of someone deep in the DPRK, with no real contact with the outside world other than what the state media tells you.
Anyway, the DPRK isn't going anywhere fast, because the status quo is the best situation for nearly everyone involved in the situation.
Remember when East and West Germany reunified? Remember the economic chaos as the run down heavily industrial East Germany suddenly fell under the same economic portfolio as West Germany? The East/West divide still exists in Germany today to some extent, and it's been over twenty years.
Now, magnify that to the gulf that exists between the economic conditions of North Korea and South Korea. The South Korean economy would collapse under the strain of having to look after both itself and the North.
China wants the North to stay, both as a slight buffer zone between it and the west (although it has no such zone between it, Taiwan and Japan) and to prevent thousands of North Korean refugees crossing the border into China and completely wrecking the Chinese economy which is already starting to run into trouble. That is the only reason Beijing supports Pyongyang, otherwise they can't stand the Kim family, but they have to smile and be nice because if North Korea collapsed, it would be an economic disaster for the whole region, and that includes the US and Japan who trade with both China and South Korea. If those two economies ran into difficulty, Japan and the US will find themselves in difficulties too.
The only nation that would benefit from the unification of Korea is North Korea, but it doesn't have the resources to accomplish this task, and any attempt by Jong-un to order such a thing would likely see him suffer a 7.62mm migraine.
So, sit back and get comfortable folks because neither side are going anywhere for a loooong time.
