Summary
During the 2026 World Cup, prediction market platform Kalshi added 3 million users and captured 27% of sports betting volume, challenging traditional operators. Meanwhile, French regulators ordered ISPs to block Polymarket citing addictive design and unauthorized operations, highlighting mounting compliance challenges for the sector.
World Cup Ignites Prediction Market Trading Frenzy
The 2026 FIFA World Cup has proven to be more than a global soccer spectacle—it has become a user acquisition engine for prediction market platforms. According to CNBC, U.S.-based prediction market platform Kalshi added 3 million new users during the tournament, a remarkable growth figure by any internet platform standard.
Trading volume on World Cup-related prediction contracts on Kalshi exceeded $1.2 billion, setting a record for a single market on the platform. This market will officially close on July 19 following the final between Spain and Argentina. Vijay Viswanathan, associate dean of integrated marketing communications at Northwestern University, noted: "I don't think there's any game like football. It's played in about every country in the world, so in just terms of the total addressable market, there's really nothing that comes close to the FIFA World Cup."
According to Bloomberg Markets data, prediction markets accounted for 27% of total sports betting volume during the World Cup period. This figure indicates that prediction markets are evolving from niche financial instruments into mainstream products capable of competing with traditional betting platforms, posing a substantive threat to established sports betting giants like DraftKings and FanDuel.
The appeal of prediction markets lies in their unique mechanism design: users can not only place bets on match outcomes but also trade based on real-time odds changes during events, similar to buying and selling in financial markets. This dynamic trading mechanism provides users with greater strategic flexibility and potential profit opportunities.
The World Cup's global reach and month-long duration created an ideal testing ground for prediction markets. Unlike single-day sporting events, the tournament's extended timeline allowed platforms to demonstrate the value of continuous market-making and price discovery. Users could adjust positions as teams advanced through rounds, creating sustained engagement that traditional fixed-odds betting cannot replicate.
Kalshi's Expansion Strategy and Controversy
Kalshi, as a prediction market platform approved by the U.S. Commodity Futures Trading Commission (CFTC), has pursued aggressive expansion into sports betting, sparking divergent views within the industry. The platform offers not only traditional prediction markets on elections and economic data but has also made significant inroads into sports betting.
However, this strategy is not without risks. Multiple tweets from Twitter user @AlexH_Johnson indicate industry concerns about Kalshi's sports betting operations. Some voices argue that Kalshi should cease offering sports betting services to avoid potential regulatory risks and legal disputes. These concerns are not unfounded—the legal status of sports betting remains inconsistent across U.S. states, and the boundary between prediction markets and traditional gambling remains ambiguous at the regulatory level.
Supporters counter that Kalshi, as a CFTC-regulated compliant platform, offers sports prediction contracts that are fundamentally financial derivatives rather than gambling, representing a substantive difference from traditional betting. This compliance framework enables the platform to operate within legal boundaries and provide users with a more transparent, regulated trading environment.
The influx of 3 million new users during the World Cup undoubtedly provides market validation for Kalshi's expansion strategy. However, this rapid growth may also attract increased regulatory scrutiny, particularly as prediction markets begin to erode traditional betting's market share.
The debate highlights a fundamental tension in the prediction market space: whether these platforms should be classified as financial services or gambling operations. This classification determines which regulatory framework applies and what consumer protections must be implemented. Kalshi's CFTC approval suggests a financial services classification, but state gambling regulators may view the situation differently, especially when sports outcomes are involved.
France Blocks Polymarket: A Regulatory Warning Signal
While Kalshi enjoys user growth dividends, another prominent prediction market platform, Polymarket, has encountered regulatory headwinds in Europe. According to CoinDesk, French regulators have ordered the country's internet service providers (ISPs) to block access to the Polymarket website.
French regulators cited two primary reasons for the block: first, Polymarket's platform design incorporates addictive mechanisms that may harm users; second, the platform operates in France without authorization. This regulatory action highlights the compliance challenges prediction markets face globally.
Polymarket is a blockchain-based decentralized prediction market platform where users trade using cryptocurrency. Its decentralized nature provides greater freedom and privacy protection but also makes it more difficult to meet varying regulatory requirements across countries. France's blocking action may set a precedent for other European nations to follow, posing significant challenges to Polymarket's global operations.
Notably, French regulators specifically mentioned "addictive mechanisms." This indicates that regulators are not only concerned with platform legality and authorization issues but are also beginning to scrutinize whether prediction market product designs may cause psychological and financial harm to users. This regulatory approach may influence product design directions across the entire prediction market industry.
The French action represents a broader European regulatory trend toward stricter oversight of online gambling and gambling-adjacent services. European regulators have historically taken a more precautionary approach to consumer protection than their U.S. counterparts, often implementing restrictions before harm is demonstrated rather than after. For decentralized platforms like Polymarket, which operate without traditional corporate structures or geographic anchors, compliance with diverse national regulations presents an existential challenge.
Slow U.S. Legislative Progress Dampens Market Confidence
In the United States, progress on the long-awaited CLARITY Act (Clarity for Payment Stablecoins Act) has been sluggish, further increasing industry uncertainty. According to CoinDesk reporting, the probability of the bill passing within 2026 on Polymarket has dropped to 32%, a record low since the market launched in January.
The CLARITY Act aims to clarify the regulatory authority of the Securities and Exchange Commission (SEC) and the Commodity Futures Trading Commission (CFTC) over cryptocurrency markets, providing clearer regulatory frameworks for the industry. The bill's passage probability peaked at 82% on February 19 but has since declined steadily, reflecting market pessimism about congressional legislative processes.
The primary reason for slow legislative progress is a Senate negotiation impasse over ethics provisions. Bipartisan consensus on this critical issue is needed to advance the bill, but this process appears more difficult than anticipated. As the Senate's legislative calendar tightens, the time window for the bill continues to narrow.
Industry executives have continuously urged Congress to pass the legislation, arguing that clear SEC and CFTC jurisdiction would reduce regulatory uncertainty and bring crypto activity onshore to the United States. However, political realities appear more complex than industry expectations.
The legislative delay has practical implications beyond prediction markets. Without clear regulatory frameworks, U.S.-based crypto and prediction market platforms operate in a state of legal ambiguity, potentially deterring institutional participation and limiting access to traditional financial infrastructure. This regulatory uncertainty also creates competitive disadvantages relative to jurisdictions with clearer frameworks, potentially driving innovation and economic activity offshore.
The Future of Prediction Markets: Balancing Growth and Compliance
The prediction market industry stands at a crossroads of rapid development. On one hand, major events like the World Cup demonstrate these platforms' enormous market potential and user appeal; on the other hand, regulatory pressure from different jurisdictions continues to mount.
For compliant platforms like Kalshi, the challenge lies in maintaining regulatory compliance while expanding rapidly, avoiding regulatory red lines as business scope broadens. Sports betting operations have brought substantial user numbers and trading volume but may also trigger increased regulatory scrutiny.
For decentralized platforms like Polymarket, challenges are even more severe. How to maintain decentralized characteristics while meeting regulatory requirements across countries remains an unsolved problem. France's blocking action may be just the beginning, with other countries potentially following with similar measures.
From an institutional perspective, prediction market development also prompts new considerations. These platforms are fundamentally venues for financial derivative trading, requiring robust infrastructure for risk management, user protection, anti-money laundering, and other aspects. For institutions providing custody and wallet services, how to offer secure, compliant asset management solutions for prediction market platforms and their users represents a market opportunity worth monitoring.
The infrastructure requirements for prediction markets differ from traditional financial derivatives in important ways. Settlement must be rapid and transparent, with clear rules for outcome determination. Custody solutions must handle both fiat and cryptocurrency assets depending on the platform. Risk management tools must account for the unique characteristics of prediction market contracts, which may have binary outcomes or complex conditional payoffs. These technical requirements create opportunities for specialized service providers.
Regulatory Trends and Industry Outlook
From a global regulatory perspective, prediction markets face increasingly stringent scrutiny. Regulators are not only concerned with platform legality and authorization but are also beginning to focus on more detailed aspects such as product design, user protection, and addiction prevention. This requires platforms to invest more resources in compliance infrastructure while pursuing growth.
Although progress on the U.S. CLARITY Act has been slow, its eventual passage would provide clearer regulatory frameworks for the industry. Even if the bill cannot pass within 2026, ongoing legislative discussions are gradually forming industry consensus, laying groundwork for future regulatory policies.
For the prediction market industry, the key is finding a balance between growth and compliance. Platforms that can provide innovative products while meeting regulatory requirements will hold advantages in future competition. Those that ignore compliance risks and pursue rapid expansion at all costs may face regulatory crackdowns similar to what Polymarket encountered in France.
The traffic dividend from the World Cup will eventually fade, but the value of prediction markets as emerging financial instruments will persist. How to develop healthily within regulatory frameworks will be the key factor determining this industry's long-term prospects. Platforms that invest early in compliance infrastructure, establish transparent governance mechanisms, and engage proactively with regulators are more likely to survive and thrive as the regulatory environment matures.
The prediction market sector's evolution will likely mirror the broader maturation of crypto and decentralized finance: initial rapid growth followed by regulatory clarification, market consolidation, and eventual integration with traditional financial systems. Platforms positioned to navigate this transition—balancing innovation with compliance, user experience with consumer protection, and decentralization with regulatory engagement—will define the industry's next chapter.
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