This piece does something rare in modern economic reporting: it pulls back the curtain on a specific, documented conspiracy between two corporate giants that has quietly inflated food prices for the entire economy. Matt Stoller doesn't just theorize about market power; he presents a sealed legal complaint that reveals how Pepsi and Walmart engineered a "price gap" to crush competitors and extract wealth from consumers. For a busy reader trying to understand why groceries remain expensive despite falling inflation elsewhere, this is the missing link between corporate boardrooms and the checkout line.
The Mechanics of a Collusive Price Gap
Stoller begins by grounding the argument in hard data, citing an Atlanta Fed report that links grocery consolidation directly to higher inflation rates. He notes that where monopolies prevail, food inflation is 0.46 percentage points higher than in competitive markets, a cumulative difference that has driven a 9% hike in food prices since 2006. But the real shock comes from the unsealed complaint against Pepsi, which Stoller describes as a blueprint for exclusionary tactics. He writes, "The allegation is price discrimination, which is a violation of the Robinson-Patman Act, a law passed in 1936 to prevent big manufacturers and chain stores from acquiring too much market power."
The core of the argument is that this isn't a standard volume discount; it is a coordinated strategy to ensure Walmart's dominance while punishing everyone else. Pepsi allegedly keeps wholesale prices high for every outlet except Walmart, then polices the market to ensure no rival can undercut that advantage. Stoller highlights the internal language used by the companies, noting that they tracked "leakage"—consumers buying Pepsi outside of Walmart—and labeled independent stores that offered competitive discounts as "offenders." As Stoller puts it, "When the 'price gap' would narrow too much, Pepsi executives panicked with fear they might offend Walmart."
This framing is effective because it strips away the abstract economic jargon of "efficiency" and reveals the raw mechanics of coercion. The evidence suggests that when a competitor like Food Lion tried to lower prices to match Walmart, Pepsi didn't just stop giving them discounts; they actively raised wholesale prices to punish the store. Stoller writes, "The plan advised that Pepsi 'must commit to raising rate [on Food Lion] faster than market by minimum annually.'" This is not market competition; it is a cartel-like enforcement mechanism disguised as a supply chain relationship.
Critics might argue that volume discounts are a natural part of retail economics and that penalizing smaller chains for not having the same buying power is simply the result of scale. However, the complaint suggests the issue isn't just size, but the active suppression of price competition at the retail level to maintain a false illusion of low costs at the dominant retailer.
"Keep us the king of our domain and we'll make you the king of yours."
The Politics of Secrecy and the Fight to Unseal
Perhaps the most compelling part of Stoller's coverage is not the corporate collusion itself, but the political maneuvering to keep it hidden. He details how a Trump administration official, FTC Chair Andrew Ferguson, abruptly dropped the case and fought to keep the complaint sealed, even as he publicly claimed to be leading a charge on affordability. Stoller writes, "Ferguson ended it the day before the government was supposed to go before the judge to manage the unsealing process. And that kept the complaint redacted."
The author argues that the secrecy was a strategic choice to avoid litigating the uncomfortable truth: that the affordability crisis is driven by market power, not supply chain disruptions. Ferguson and his colleague Mark Meador publicly attacked the previous FTC leadership, calling the case "lawless" and "partisan," while simultaneously hiding the evidence that would have proven the case's merit. Stoller notes, "The strategy was to handwave about that mean Lina Khan to lobbyists, while keeping the evidence secret."
This section of the piece serves as a sharp critique of how regulatory capture can function even when the political winds shift. The fact that the complaint was only revealed after a nonprofit, the Institute for Local Self-Reliance, forced the court to intervene highlights the fragility of public oversight. Stoller writes, "So we finally got to see what Ferguson and Meador were trying to hide."
The historical context Stoller weaves in here is crucial. He draws a parallel to the Granger movement and the anti-chain store movements of the 1920s and 30s, which fought against similar tactics by A&P. He reminds readers that the Robinson-Patman Act was born from the realization that "public prices and no secret kickbacks" were essential for a democratic economy. Stoller writes, "The idea of the single price store, where a price is transparent and is the same for everyone, was created by department store magnate John Wanamaker in the post-Civil War era... His single price strategy was part of an evangelical movement to morally purify America."
This historical lens adds depth, suggesting that the current outrage over prices isn't just a reaction to inflation, but a revival of a long-standing American tradition of demanding fair pricing. It reframes the issue from a technical economic debate to a moral imperative.
The Bottom Line
Stoller's strongest move is connecting the specific, documented collusion between Pepsi and Walmart to the broader, systemic failure of antitrust enforcement over the last decade. The piece's biggest vulnerability is its reliance on a single unsealed complaint, though the specificity of the internal documents cited makes the allegations difficult to dismiss. As the political fallout begins, with bipartisan pressure mounting to reopen the case, the real test will be whether the institutions responsible for protecting competition can overcome the inertia of the last fifty years of deregulation. The reader should watch for how the Robinson-Patman Act is revived in the courts, as this could mark a turning point in how the law treats algorithmic and corporate pricing power.