A federal appeals court has revived an antitrust lawsuit accusing several major Las Vegas hotel and casino operators of using artificial intelligence-driven pricing software to coordinate room rates, reopening litigation that had previously been dismissed by a lower court.
According to Bloomberg Law, the appellate court concluded that consumers had plausibly alleged an unlawful agreement involving competing hotel operators and a common pricing software provider. The ruling reverses an earlier district court decision that dismissed the claims and allows the case to proceed for further litigation.
The lawsuit targets hotel companies including Caesars Entertainment and MGM Resorts International, alleging that they relied on revenue-management software supplied by Rainmaker, a business acquired by hospitality technology company Cendyn, to exchange competitively sensitive market information and influence room prices on the Las Vegas Strip.
The plaintiffs contend that the software enabled participating hotels to align pricing decisions in a manner that reduced competition and resulted in travelers paying artificially inflated room rates. The hotel companies and the software provider have denied the allegations.
Bloomberg Law reported that the appeals court found the plaintiffs had alleged enough facts at the pleading stage to move beyond dismissal. Rather than deciding whether antitrust violations actually occurred, the court concluded that the complaint sufficiently described circumstances that could support an inference of coordinated conduct if proven through evidence during litigation.
The decision marks another significant development in the expanding legal debate over algorithmic pricing tools and their potential role in facilitating anticompetitive conduct.
U.S. antitrust regulators have increasingly focused on whether software platforms that aggregate competitor data or generate pricing recommendations could enable unlawful coordination even without traditional forms of communication among competitors.
The U.S. Department of Justice and the Federal Trade Commission have repeatedly warned that companies remain responsible for complying with the Sherman Act regardless of whether pricing decisions are made directly by employees or through automated systems. Federal enforcement agencies have emphasized that the use of algorithms does not shield firms from liability if technology is used to facilitate collusion.
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The issue has attracted attention beyond the hotel industry. The Justice Department has brought enforcement actions involving algorithmic pricing in residential rental markets, including litigation against RealPage, alleging that competing landlords used shared pricing software to reduce competition. RealPage has denied those allegations, and the litigation remains ongoing.
Legal scholars and competition experts have identified algorithmic pricing as one of the most significant emerging challenges in modern antitrust enforcement because software can rapidly process large amounts of market data while influencing pricing decisions across competing businesses.
At the same time, courts have generally recognized that the use of pricing software alone does not establish an unlawful conspiracy. Antitrust liability typically requires evidence of an agreement among competitors, rather than independent adoption of similar technology.
The revived lawsuit involving Caesars, MGM, and other hotel operators therefore centers on whether the plaintiffs can ultimately demonstrate that the shared use of the Rainmaker platform amounted to coordinated conduct prohibited under Section 1 of the Sherman Act, rather than parallel business decisions made independently.
According to Bloomberg Law, the appeals court’s ruling does not determine whether the defendants violated federal antitrust law. Instead, it allows discovery and additional proceedings to move forward, giving both sides the opportunity to develop factual evidence regarding the operation of the pricing software, the exchange of information, and the nature of any alleged coordination.
Source: Bloomberg Law
