This is exactly what happened in Vietnam post-1975, including the army openly stealing whatever and whenever they wanted (including metal detector sweeps of residential floors and walls to look for hidden valuables).
They don't seem to understand that countries just don't "make money" for nothing. They need goods, products, services to sell to other nations and within their own borders to generate revenue on which they can, in turn, collect revenues to run their government.
If you starve your population to death........literally.......what will the government produce for sale? How will they make money? How will they buy food for even themselves?
Never forget: the first task of any bureaucracy.......ANY bureaucracy........is to protect itself.
These N. Korean morons can't even do that right.