The dictatorship of capital is worldwide and doesn't respect the borders of 'countries'. The degree of despotism or authoritarianism seen in one place or another has to do with the intensity of the class struggle there. It's most obvious during war-time or severe economic strife, where any pretenses of 'freedom' are generally tossed in the trash. Also, no where is 'ruled by one person'. If you think that then your understanding of geopolitics is naive.