Why hasn’t a strong centralized government been established in Japan for a long time?

Why hasn’t a strong centralized government been established in Japan for a long time? How did this affect its socio-economic and political development? Give examples.

In Japan, there have never been dynastic coups, which in general is a unique phenomenon for the Eastern despotism.

The thing is that until the middle of the 19th century, a dual form of government developed in Japan, in which the tenno (that is, the emperor) played a symbolic, sacred role. The main role in the life of the state was played by the shogun – a military ruler who concentrated the main power in his hands. And, if usually, monarchs rely on the army or officials, then the shogun relied on local princes. Local princes had large autonomous rights in their provinces-principalities. Thus, the shogun controlled local affairs of state and retained the provinces for his subjects, so that they did not raise rebellions.

Power in Japan was not centralized, but this did not in any way affect its intensive development, on the contrary. For example, centralized China was in a state of crisis for a long time.