Peace on the Korean Peninsula would offer far bigger economic benefits to impoverished, isolated North Korea than to the already developed South.

Expectations are rising for an end to decades of hostilities stemming from Friday's summit meeting between South Korean President Moon Jae-in and North Korean leader Kim Jong Un. A deal would open the door for Moon's plan to develop "three economic belts" connecting the two Koreas, and for business and investment opportunities for South Korean companies.

But with an economy only a fraction of the size of South Korea's, North Korea stands to be the big winner, while the economic benefits for the South would be limited.