This paper argues that the growth of large, efficient but anticompetitive superstar firms is responsible for the recent slowdown in US economic growth. The argument is based on the growth theory that we have previously developed and tested, which is based on the concept of creative destruction

Statistical agencies typically impute inflation for disappearing products based on surviving products, which may result in overstated inflation and understated growth. This paper uses the theory and methodology developed by Aghion et al. (2017) to quantify in the case of France how much of...