I think it's mostly the control from the first 2 points you mention. They are often working from China, where the authorities will not help them. "Well compensa

I think it's mostly the control from the first 2 points you mention. They are often working from China, where the authorities will not help them. "Well compensated" in North Korea terms means not starving and your family has not yet been sent to a forced labor camp. Escaping means your family suffers terribly.