In their December 16, 2020 article, 10 States Accuse Google of Abusing Monopoly in Online Ads, David McCabe and Daisuke Wakabayashi quote Maurice Stucke:
Maurice Stucke, a law professor at the University of Tennessee and co-author of “Competition Overdose,” said that the online ad industry stands out as a place where regulators should look, and noted that it has also caught the attention of regulators in Australia, France and Britain.
“In no other market do you have one entity that represents most of the buyers, most of the sellers and controls the leading exchange,” he said. “You can create a system that on the surface looks robustly competitive but it really isn’t.”
The allegations of collusion with Facebook stood out, Mr. Stucke said, since such examples of anticompetitive behavior are usually seen as the linchpin of a strong antitrust case — the type of evidence that should interest more states and even the Justice Department.