A growing body of empirical research highlights substantial changes in the US economy during the last three decades. Business dynamism is declining, market power seems to be on the rise, and aggregate productivity growth is sluggish. We show analytically that a decline in the rate of growth of...

This paper examines the effect of wealth concentration on firms' market power when firm entry is driven by entrepreneurs facing uninsurable idiosyncratic risks. Under greater wealth concentration, households in the lower end of the wealth distribution are more risk averse and less willing (or...