Not-so-free markets

D. Coyle, here. 

Stand und Entwicklung der Unternehmenskonzentration in Deutschland

Monopolkommission, hier.

Information Technology and Industry Concentration

J. Bessen, here. 

Antitrust in a Time of Populism

C. Shapiro, here. 

Information Technology and Industry Concentration

J. Bessen, here.

Artificial Intelligence and Competition

H. Varian, C. Shapiro, Video here.
Interesting disagreement between Varian and Shapiro on how easy it is to "purchase data specific to the application" (16:38).

“There Is Convincing Evidence That Concentration Has Been Rising”

Interview with J. Kwoka, here. 

Conference: Vestager, Posner, and Top Scholars Ask If There Is a Concentration Problem in America

ProMarket.org, here. 

C'tee in Israel proposes businesses separate holdings

Jpost.com, here.