Does inventor concentration in large incumbent firms reduce innovative output?
Core argument: Inventors hired by incumbents rather than young firms see earnings rise 12.6% while their innovative output falls 6–11% over four years, based on employment-history data covering more than 760,000 US inventors.
Our paper uses novel data on the employment history of over 760 thousand inventors, to investigate the model’s predictions. We show empirically that (i) inventors are increasingly concentrated in large incumbents, less likely to work for young firms, and less likely to become entrepreneurs, (ii) when an inventor is hired by an incumbent, compared to a young firm, their earnings increases by 12.6 percent and their innovative output declines by 6 to 11 percent over four years. Our analysis has documented that inventor reallocation toward large incumbents, at least the way it happened in recent decades, might be lowering the growth capacity of the country.







