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Something worth noticing happened during this World Cup, and the betting headlines have mostly buried it. Prediction-market platforms like Kalshi and Polymarket recorded their biggest weeks ever — Kalshi around $4.5 billion, Polymarket about $2.8 billion in a single early-June week, with investment firm Bernstein estimating the tournament could drive as much as $10 billion in volume across the category. One analyst described it as “the Super Bowl every day.”
Read that as a betting story and you will draw the wrong conclusions. Read it as a behavioural one, and it is the clearest signal we have had in years about where fan engagement is going.
The boom is not about money. It is about participation.
What these platforms have actually demonstrated is that millions of people do not want to watch football passively. They want a stake in it. They want to back a judgement, hold a position, return every day to see whether they were right, and argue about it with everyone they know. The wager is just the mechanism. The underlying behaviour, turning a spectator into an active participant with something on the line, is the thing that scaled, and it scaled faster than almost anyone predicted.
That distinction matters, because the mechanism is the part that is falling away. In recent weeks Spain, Indonesia and India have moved to restrict access to these platforms, joining most of the European Union and large parts of Asia. The participation appetite is now demonstrably global; the regulated cash route to satisfying it is not. A fan in Madrid or Mumbai feels the same pull as a fan in Texas and has nowhere legal to put it.
For anyone building fan experiences, that gap is the entire opportunity. The demand has been proven at extraordinary scale. The supply, in most of the world, has just been switched off.
The future of engagement is predictive, daily and participatory
The lesson is not that rights-holders should chase betting. It is that the most powerful engagement loop in sport right now is the predictive one, and it does not require money to work.
Strip the wager out of what made Kalshi’s week and you are left with three things that any league or federation can offer directly: a stake in an outcome, a reason to come back tomorrow, and a verdict you can be proven right or wrong about. A fan who forecasts a scoreline, fills a bracket, drafts a fantasy side or calls the next goalscorer is doing exactly what the prediction-market user is doing, minus the regulatory exposure, and crucially, in the markets where the cash exchanges are now blocked. Free-to-play prediction and gamification capture the same psychology and are legal where it counts.
This is the shift I would urge every rights-holder to internalise. The broadcast model treated the fan as an audience to be measured. The participation model treats the fan as a player to be engaged. The World Cup has just shown, in nine and ten-figure numbers, which one people actually want.
Why the data is the prize, not the engagement itself
Here is the part that turns a nice feature into a commercial strategy. The value of a fan making a prediction is not the moment of fun. It is what they reveal in the act of making it.
A fan who predicts an outcome has told you who they are, which team and which players they care about, how confident they feel, and most valuably, when they will show up. Repeated over a tournament, that is a behavioural profile no broadcast rating could ever produce. And because it happens inside a first-party environment the rights-holder controls, that signal stays with the league or federation rather than flowing to a third-party platform that rents the fan back to you through advertising.
This is the core of how we think about fan engagement at SI, and why FanOS is built around prediction, gamification and loyalty rather than passive content. The strategic prize is the conversion of an anonymous, unmeasurable broadcast audience into a known, addressable, monetisable one. Every prediction a fan makes is a small, voluntary act of identification. Do that at the scale of a season, across a league, a federation, a tournament, and you have built something a sponsor will pay a premium to reach and a rights-holder can monetise on its own terms.
The window is open now
The prediction-market surge will keep generating regulatory drama, and rights-holders will spend a lot of energy deciding how close they want to stand to it. That is a distraction from the more useful question.
The behaviour these platforms unlocked, active, daily, identity-revealing participation in a match, is not going back in the box. The appetite is proven and global. The compliant, first-party way to meet it is wide open in exactly the markets where the cash route has closed. The rights-holders who build participation into the core of their fan experience over the next few seasons will own a relationship with their audience that no broadcaster, sponsor or betting platform can take from them.
The World Cup did not just expose a betting boom. It handed everyone a fan engagement roadmap.
About SI
SI (formerly Sportz Interactive) is the leading sports technology partner for leagues, teams, federations, broadcasters, and media companies worldwide. With 24 years of engineering pedigree, SI specialises in creating scalable, enterprise-grade digital products that turn fan engagement into measurable commercial value. SI works with world-renowned sporting organisations, leagues, and franchises – including the NBA, ICC, UFC, FIBA, BCCI, leading IPL teams, World Archery, and global technology and media brands such as Google, Amazon Prime Video, and more.
Through FanOS: The Fan Engagement Operating System for Sports Organisations, SI provides a portfolio of productised solutions built specifically for the sports industry, through a suite of flexible, independent modules across Data, Experiences, and Activations that are designed to run as a complete ecosystem, or seamlessly plug into existing workflows.
SI doesn’t just build fan experiences; we ensure sports organisations operate like scalable, data-integrated enterprises pioneering the future of sports fandom.
For more information, please visit sportzinteractive.net/fanos and follow SI on LinkedIn.
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