"whether or not it’s possible for one country to remain as powerful as another with four times as many people"

I don't understand why one country whether it's the US, china or otherwise has to dominate the world.Assuming that shitty tradeoffs are made to get there, I wish there was a world country of some sort that dominated in the near future. Otherwise it seems to me like there are going to be many sony like episodes that just do more harm than good.