You picked the one example of actual German efficiency: Stationary retail. Competition is so hard that prices are Eastern European while incomes are Western Eur

You picked the one example of actual German efficiency: Stationary retail. Competition is so hard that prices are Eastern European while incomes are Western European. Those chains are also expanding world-wide. It is one of the few segments where American companies could not succeed in the German market, even though they have tried to (e.g. Walmart).