By Lina Irawan 
On Wednesday, the sports trading platform Novig ignited a fresh wave of controversy with the release of a video featuring actress Sydney Sweeney. The advertisement, promoting Novig’s sports-only offering ahead of the highly anticipated NFL season opener, depicted Sweeney appearing nearly nude. The ad swiftly drew widespread scrutiny, not only of Novig’s specific marketing tactics but also of the broader industry’s escalating efforts to increase user engagement and attract new demographics to their platforms. Critics argued that the ad exploited sexuality to market a product that, despite being framed as a trading platform, carries inherent risks similar to gambling.
This particular advertisement landed just a day after rival platform Polymarket unveiled its own star-studded commercial designed to capitalize on the upcoming football season. Polymarket’s campaign featured basketball legend LeBron James alongside a constellation of other prominent athletes, including NFL icons Eli Manning and Derek Jeter, as well as renowned entertainment figures like filmmaker Spike Lee and supermodel Emily Ratajkowski. The juxtaposition of Novig’s provocative approach with Polymarket’s ensemble of mainstream celebrities underscored the diverse, yet equally aggressive, marketing strategies being deployed across the sector.
The public reaction to both campaigns was immediate and impassioned, particularly on social media. "Selling gambling by selling sex. Society is crumbling before our eyes," one user wrote of Novig’s promotion, encapsulating the outrage many felt over the ad’s perceived objectification and its connection to a potentially addictive product. The Polymarket ad, while less overtly sexual, also faced significant backlash for its celebrity endorsements. "Damn, I can’t believe LeBron is a sellout now," another user lamented, expressing disappointment that an athlete of James’s stature would lend his image to such a venture. The sentiment escalated further, with a user identified as "Joe Wrote" declaring, "LeBron’s Polymarket deal knocks him out of GOAT contention. The title stays with Michael Jordan, a man untainted by the allure of sports gambling." These reactions highlight a growing public discomfort with celebrities using their influence to promote platforms that many view as gambling, regardless of how they are legally categorized.
The current celebrity advertising push comes amid a period of rapid expansion for prediction markets across the United States, an expansion occurring despite a contentious and unresolved legal and regulatory fight. These innovative platforms allow users to buy and sell contracts on the outcomes of various events, ranging from sports and politics to pop culture, often with just a few clicks. The ease of access and the allure of participating in real-time market dynamics have fueled their rapid growth, which in turn has intensified scrutiny over their legal classification. A central, unresolved question is whether sports-related contracts offered by these platforms should be treated as federally regulated financial products—akin to futures or options—or as traditional gambling under state law, which typically entails more stringent licensing and consumer protection requirements.
To sustain this formidable momentum and attract an ever-growing user base, prediction market companies are pouring significant capital into high-profile marketing campaigns. Kalshi and Polymarket, two of the sector’s largest players, each valued at approximately $20 billion, have been particularly aggressive in recruiting celebrities to promote their platforms. Recognizing the immense cultural and economic power of sports, these companies strategically time their major campaigns around the start of significant sports seasons and tournaments to maximize visibility and engagement.
For instance, in the lead-up to the World Cup, soccer’s biggest international tournament, Kalshi launched an ambitious campaign featuring Argentina captain Lionel Messi alongside his national teammates Nicolás Otamendi and Rodrigo De Paul. This was part of a commercial partnership with the country’s national football federation, lending an air of official endorsement and legitimacy to the platform. Kalshi further expanded its international reach by featuring Luka Modrić, the revered captain of Croatia’s national team, in a separate campaign. These endorsements tapped into the global passion for soccer, associating Kalshi with sporting excellence and national pride.
Prior to its sports-centric efforts, Kalshi also enlisted Oscar-nominated actor Timothée Chalamet for a series of ads. These commercials took a different approach, depicting Chalamet in mundane, everyday settings such as a dentist’s office or a music store. This campaign aimed to position prediction markets as accessible, perhaps even sophisticated, forms of engagement for a younger, trend-conscious demographic, shifting away from the traditional image of high-stakes betting. The underlying message was that participating in prediction markets was a normal, even cool, activity, seamlessly integrated into daily life.
This aggressive marketing strategy, however, is unfolding against a backdrop of mounting uncertainty over the industry’s legal future. The core of the legal dispute lies in the interpretation of these contracts. Prediction markets argue that their offerings are derivatives, financial instruments whose value is derived from an underlying asset or event, and thus fall under the jurisdiction of the Commodity Futures Trading Commission (CFTC) as defined by the Commodity Exchange Act (CEA). This interpretation would allow them to operate nationally under a federal framework, preempting a patchwork of state-level gambling laws. Conversely, state regulators and some legal scholars argue that these contracts are simply wagers on future events, inherently gambling, and therefore subject to state gambling statutes, which are often more restrictive and vary significantly across jurisdictions.
A pivotal moment arrived in August when the Ninth Circuit Court of Appeals delivered a ruling that significantly challenged the prediction market industry’s preferred legal standing. The court ruled that Nevada could enforce its gambling laws against Kalshi’s sports-event contracts, explicitly rejecting the company’s argument that federal commodities law preempted state oversight. This ruling represents a major setback for Kalshi and the industry at large, as it validates the interpretation that at least some prediction market offerings constitute gambling under state law. Legal experts suggest this decision could set a precedent for other states to pursue similar enforcement actions, fragmenting the market and complicating national expansion strategies.
With appellate courts now divided on this fundamental question—different circuits potentially arriving at different conclusions regarding federal preemption—the dispute over who gets to regulate this fast-growing industry could reach the Supreme Court as early as next year. A circuit split is often a key factor in the Supreme Court’s decision to hear a case, as it indicates a need for a uniform national standard. The stakes for the prediction market industry are astronomically high. A Supreme Court ruling affirming federal preemption would provide a clear path for national operation under a single regulatory body, potentially unlocking even greater growth. Conversely, a ruling upholding state-level gambling regulation could force these platforms to navigate a complex, state-by-state licensing labyrinth, potentially crippling their current business models and significantly curtailing their expansion ambitions.
Beyond the legal battle, the ethical implications of celebrity endorsements for prediction markets continue to fuel public debate. Critics, including public health advocates and addiction specialists, draw parallels to past controversies surrounding the marketing of tobacco and alcohol, and more recently, cryptocurrencies and traditional sports betting. They argue that the glamorous portrayal of prediction markets, especially through beloved public figures, can normalize risky financial behaviors, particularly among younger and more vulnerable demographics. The ease of access via mobile apps, coupled with the sophisticated marketing that often blurs the lines between entertainment, investment, and gambling, creates a potent cocktail that raises serious concerns about potential increases in problem gambling and financial instability.
As prediction markets continue their aggressive push into the mainstream, the industry finds itself at a critical juncture. The allure of celebrity-driven advertising is undeniable, promising increased user engagement and broader market penetration. However, this strategy is also drawing intense scrutiny and exacerbating a fundamental legal and ethical conflict. The outcome of this multi-faceted battle—in the court of public opinion, on social media, and ultimately, in the highest court of the land—will determine not only the future of prediction markets but also set a precedent for how innovative financial technologies are regulated and advertised in an increasingly digital and interconnected world. The industry’s journey from a niche financial tool to a mainstream, celebrity-endorsed phenomenon is far from over, and its ultimate destination remains profoundly uncertain.
