The diffusion of the internet has had varying effects on the location of economic activity, leading to both increases and decreases in geographic concentration. In an invited column at VoxEU, Chris Forman, Avi Goldfarb and I presents evidence that the internet worked against increasing concentration in invention. This relationship is particularly strong for inventions with more than one inventor, and when inventors live in different cities. Check out the post here.
Competition in the Digital Age
Digitopoly 