When we are saying smaller cities in South Korea we are still talking about million plus cities. There are five of them not in Seoul’s orbit. Germany famously

When we are saying smaller cities in South Korea we are still talking about million plus cities. There are five of them not in Seoul’s orbit. Germany famously lacks a dominant city and has a pretty good economy. So does the US. Decentralization is also diversification; if one region is falling behind it does not take the whole country with them.