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The investment banking and capital markets firm Jefferies said in a September report that sports had become prediction markets’ “most important liquidity driver”, with combo and parlay-style contracts accounting for an increasing share of activity. But the analysts cautioned that prediction markets are scale businesses with relatively low revenue yields, leaving their economics dependent on sustained liquidity, engagement and trading activity.
James Monk, founder of sports data and streaming provider Catalist Sports, has witnessed that dependence directly. Catalist supplies ITF tennis data to Kalshi and Polymarket and has an exclusive US sports-streaming agreement with Kalshi.
The company must also provide data to the firms making markets on those events.
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KVA expressed concern over the potential manipulation of Google’s autocomplete function by unauthorised operators and websites primarily set up to redirect Dutch consumers to illegal gambling offers.
While acknowledging Google’s cooperation in removing paid advertisements promoting illegal casinos, the KVA emphasised the need for the company to take more comprehensive measures addressing organic search results.
Dutch MPs have raised similar concerns before. In December 2025, CDA MP Straatman asked the state secretary whether websites advertising as “Beste casino’s zonder Cruks” should be taken offline immediately.
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It had sent over 217,000 marketing emails and SMS messages within a 16-day window to customers who had explicitly unsubscribed. ACMA regarded the volume and timing of these messages as significant enough to warrant enforcement action.
In response to the penalties, Dabble Sports has agreed to a two-year court-enforceable undertaking. It has obliged the company to commission an independent review of its compliance systems. Dabble must develop a board-approved plan to implement these changes with appropriate resources.
An ACMA spokesperson reiterated: “BetStop is an important consumer protection measure, but it only works if wagering companies follow the rules.”
