Sports betting - regulated as gambling
Sports betting is regulated under the gambling regime in each jurisdiction. Operators hold a gambling licence, the product is taxed under gambling-tax rules, advertising follows gambling-advertising rules, and player-protection / responsible-gambling rules apply. Stakes and winnings flow through gambling-licensed payment rails. The operator carries a bookmaker's margin (the over-round on offered odds) that determines its expected revenue.
Prediction markets - regulated as financial markets (where regulated at all)
Prediction markets operate under different frameworks. Kalshi is a CFTC-regulated Designated Contract Market under the Commodity Exchange Act - regulated as an event-contracts financial-market operator, not as a sportsbook. Polymarket operates ex-US on crypto rails. The CFTC's posture on event contracts has shifted under successive Commissioner compositions - some classes of event contract (politics, sports outcomes) have been the subject of CFTC orders, no-action letters, and state-level enforcement actions.
Product-structure differences
A sportsbook offers binary outcomes on sporting events at bookmaker-set odds; the operator manages risk by adjusting the line. A prediction market offers binary contracts whose price floats with order-book demand; the operator is a matched-book exchange that takes no risk on the outcome and earns a fee on transaction volume. Sports betting is high-frequency low-stake retail; prediction markets are typically lower-frequency higher-stake. The two products attract different counterparty profiles.
Why the boundary matters
The regulatory boundary determines which framework an operator can use, what payment rails it can access, what advertising rules apply, and how its product is taxed. For B2B research: a sportsbook in California cannot operate as a sportsbook (California has not yet legalised sports betting) but can theoretically operate prediction-market contracts on Kalshi's regulated infrastructure - though state-level enforcement has been pushing back. The Kalshi-vs-state-regulators litigation is the ongoing test case. The iGT Oracle (iGaming Times' editorial prediction-markets surface) is not real-money trading and therefore does not engage the regulatory boundary - it is industry-professional editorial forecasting only.