Editor’s Note: This article was published as part of the inaugural edition of The Commonwealth Times and reflects events as reported at the time of the referenced news coverage.
The courtroom of Judge Amit P. Mehta in the United States District Court for the District of Columbia has, over the course of two federal proceedings stretching across the better part of three years, become the stage upon which the American government mounts its most consequential challenge to concentrated corporate power since the breakup of AT&T in 1982. In closing arguments presented this spring in the remedies phase of United States v. Google, the Department of Justice reaffirmed its demand that Alphabet Inc. be compelled to divest its Chrome browser — a product used by roughly sixty-five percent of the world’s internet users — as the indispensable structural remedy to a monopoly that Judge Mehta himself ruled, in August 2024, to be unlawful.
The gravity of that earlier ruling cannot be overstated. In his landmark liability decision, Judge Mehta found that Google had maintained an illegal monopoly in the general search and search advertising markets, sustained in significant measure through billions of dollars in annual payments to Apple, Samsung, and other device manufacturers and browser developers to secure default search placement. Google’s agreement with Apple alone — worth an estimated twenty billion dollars per year by 2022 — functioned not as ordinary commerce but as an exclusionary gate, ensuring that the vast majority of search queries originating from iPhones, iPads, and Safari browsers were funneled into Google’s ecosystem before any competitor could present an alternative.
The remedies trial, which commenced in April 2025 and has proceeded through extensive testimony and documentary evidence, concerns a question more volatile than the finding of liability itself: what must be done about it. The Justice Department’s proposed remedies are sweeping in scope. At their center stands the demand that Google divest Chrome, the browser whose dominance of the desktop and mobile web gives Google an unrivaled conduit through which to channel search traffic, harvest user data, and reinforce the network effects that sustain its advertising duopoly with Meta. Prosecutors argue that so long as Google controls both the dominant search engine and the dominant browser, no remedy short of structural separation can meaningfully restore competition.
The government’s closing arguments sharpened this thesis into a proposition of architectural simplicity. Chrome is not merely a product, the Department contended; it is a distribution chokepoint. Through Chrome, Google sets the default search engine for billions of sessions per day. Through Chrome, Google collects browsing data that feeds its advertising targeting apparatus. Through Chrome, Google controls the technical standards and performance benchmarks against which rival search engines and advertising platforms must compete. To leave Chrome in Google’s hands while prohibiting default agreements, the government argued, would be to drain the moat while leaving the castle’s walls intact.
Google’s defense, led by a formidable battery of attorneys and economists, pushed back with equal force. Alphabet’s counsel argued that the forced divestiture of Chrome would constitute an unprecedented governmental intrusion into the operations of a private technology company, one that would destroy consumer value, fracture a seamlessly integrated product ecosystem, and set a chilling precedent for innovation across the technology sector. Google emphasized that Chrome is offered free to consumers and competes with Apple’s Safari, Mozilla’s Firefox, and Microsoft’s Edge in a market where switching costs are negligible — a user can download a competing browser in seconds. The company further argued that its search dominance reflects not exclusionary conduct but superior product quality, pointing to internal studies and third-party analyses showing that users who are presented with a choice screen overwhelmingly select Google of their own volition.
This argument — that the monopoly is earned rather than enforced — runs headlong into the factual record established during the liability phase. Judge Mehta’s 2024 opinion specifically rejected the contention that Google’s market share was purely the product of merit, finding instead that the default agreements created a self-reinforcing cycle: defaults drove search volume, search volume generated data, data improved search quality, improved quality attracted more users and more advertisers, and advertising revenue funded the next round of default payments. The Department of Justice, in its closing presentation, returned to this cycle repeatedly, arguing that Chrome divestiture is the only remedy that interrupts the loop at a structural level rather than merely rearranging its surface features.
Beyond Chrome, the government’s proposed remedies include prohibitions on exclusive or preferential default agreements for search, mandatory data-sharing requirements that would grant competitors access to Google’s search index and ranking signals, and restrictions on Google’s ability to leverage its Android mobile operating system to preference its own services. The data-sharing provisions have drawn particular scrutiny from legal scholars and technology analysts, some of whom have warned that compelled access to proprietary algorithms could raise intellectual property concerns and create perverse incentives. Others have noted that similar remedies were imposed, with varying degrees of success, in the European Union’s antitrust actions against Google Shopping and Android.
The economic stakes are staggering by any measure. Google’s search advertising business generated approximately $175 billion in revenue in 2024, representing the single largest concentration of digital advertising dollars on the planet. The broader programmatic advertising ecosystem — in which Google operates the leading exchange, the leading demand-side platform, and the leading publisher ad server — is the subject of a separate federal antitrust trial in the Eastern District of Virginia, where Judge Leonie Brinkema ruled in December 2024 that Google had also maintained illegal monopolies in the ad technology stack. That case, too, may result in structural remedies, raising the prospect that Alphabet could face divestiture demands on multiple fronts simultaneously.
The international dimension compounds the significance. The European Commission, the United Kingdom’s Competition and Markets Authority, Japan’s Fair Trade Commission, and India’s Competition Commission have all pursued or are pursuing enforcement actions against Google’s search and advertising practices. A Chrome divestiture ordered by an American court would have cascading consequences for these proceedings and for the global regulatory architecture governing digital platforms. It would signal that the world’s largest technology market is prepared to wield structural separation — the most potent weapon in the antitrust arsenal — against a company that has, for more than two decades, occupied the commanding heights of the internet economy.
Judge Mehta is not expected to issue a final remedies decision until late summer or early autumn of 2025, though the complexity of the case and the near-certainty of appeal could extend the timeline considerably. Google has signaled that it will contest any divestiture order to the fullest extent of appellate review, potentially carrying the case to the United States Supreme Court. The appeals process alone could consume years, during which the competitive dynamics of the search and advertising markets may evolve in ways that render portions of the remedy obsolete — a temporal paradox that has haunted antitrust enforcement in fast-moving technology markets since the government’s case against Microsoft in the late 1990s.
Yet the closing arguments delivered in Judge Mehta’s courtroom this spring carry a weight that transcends the procedural calendar. They represent the culmination of a bipartisan reassessment of competition policy that began in earnest during the Trump administration’s first term, accelerated under President Biden, and has continued — with notable shifts in emphasis — into the present. The Google case is the flagship of that reassessment, the vessel in which a generation’s worth of scholarly criticism, congressional investigation, and regulatory ambition has been concentrated into a single legal proceeding. Whether the result is a Chrome divestiture, a set of behavioral constraints, or some hybrid remedy yet to be articulated, the outcome will define the boundaries of permissible market power in the American digital economy for decades to come.
What is ultimately at issue is a question older than the internet itself: whether a private enterprise, having achieved dominance through a combination of ingenuity and strategic exclusion, may be permitted to retain the structural apparatus of that dominance after a court of law has found it to be unlawful. The Department of Justice, in pressing for Chrome’s separation from Google, has answered that question with a clarity that the law has not produced in forty years. The defense, in resisting, invokes the countervailing tradition that views structural remedies as destructive overreach. The republic — and its markets — await the court’s judgment.