Revelations from government investigations have paved the way for private antitrust lawsuits against Google and Facebook brought by publishers and advertisers
Government antitrust lawsuits have created openings for numerous private cases against Big Tech, with more expected to come. Tweets: @nytimestech , @blmohr , @nytimesbusiness , and @dmccabe See also Mediagazer Tweets: @nytimestech : Private lawsuits are adding to the mounting legal pressure on Big Tech companies. Already, more than 10 suits echoing government antitrust cases have been filed against Google, Facebook or both in recent months. https://www.nytimes.com/... @blmohr : “Already, more than 10 suits echoing the federal and state cases have been filed against one or both of the Silicon Valley giants in recent months. Many of them lean on evidence unearthed by the government investigations.” https://www.nytimes.com/... @nytimesbusiness : The operator of a website called Sweepstakes Today says Google used its power over online advertising to bleed his website dry and is seeking “substantial” damages. Cases such as this could be a problem for Big Tech. https://www.nytimes.com/... David McCabe / @dmccabe : New: The government lawsuits against Google and Facebook are fueling a wave of private litigation from users, advertisers and an Oklahoma man who goes by the nickname “Mr. Sweepy.” If they're successful it could cost the companies dearly. https://www.nytimes.com/... See also Mediagazer
Context & Ripple Effects
The private litigation wave is riding on a paper trail the government built first: the DOJ's ad tech case calling for a breakup of Google's ad business, and state attorneys general alleging Google misled publishers and advertisers about ad pricing for years. Those investigations handed private plaintiffs something they rarely have — discovery-grade evidence of alleged conduct.
Publishers and advertisers are the natural second wave because they are the parties allegedly on the paying side of that conduct, and the earlier Foundem challenge to Google showed how hard solo private cases were before government findings existed. With more than 10 suits already echoing the federal and state dockets, the strategy has flipped: let regulators open the file, then sue on top of it.
First-order effects
- Google and Facebook now face parallel public and private dockets — over 10 private suits filed in recent months — meaning the same alleged conduct gets litigated twice, with private plaintiffs free-riding on government discovery.
Second-order effects
- The state AGs' allegations that Google deflated publisher sales while raising buyer prices give advertisers and publishers a concrete damages theory, pushing pressure toward settlements or structural concessions in ad tech rather than just fines.
Third-order effects
- If the pattern holds, government antitrust actions become de facto evidence pipelines for private class actions, multiplying the cost of gatekeeping conduct beyond what any single regulator can impose — and making the DOJ's push to break up Google's ad tech unit a template other plaintiffs build on.
The trend: Big Tech antitrust enforcement is shifting toward a two-track model where government investigations seed waves of private lawsuits from the companies' own customers.