The economy is same as human being. When the society is young it need the growth of economy. But if it is grown up enough, the growth too much will be a cause of economic adult disease.
The prescription about this disease is "Economic diet". But it is difficult to balance the reduction between with rich people and poor people. It sometimes take from the poor people and enrich the rich people.
Japan had already do this "Economic diet" in Edo period. I think Japan can be the model case of "Economic diet".