Soziale Netzwerke, Suchmaschinen und der Online-Handel zeichnen sich auf den ersten Blick dadurch aus, dass hier sehr große Unternehmen den Markt beherrschen. Ob dies aber zu Wettbewerbsbeschränkungen führt, wie digitale Märkte sinnvoll abzugrenzen und wie faire Marktbedingungen herzustellen...

Scale characteristics are key properties of production functions that determine optimal firm sizes, and have considerable policy implications for sectors undergoing restructuring. However, estimates of scale characteristics typically vary with the assumptions of the underlying empirical model....

While productivity growth in electricity generation is associated with multiple positive effects from an economic and environmental perspective, measuring it is challenging. This paper proposes a framework to estimate and decompose productivity growth for a sector characterized by multiple...