Google bans prediction market extensions from Chrome Web Store starting August 1
Google will ban Chrome extensions that enable real-money prediction market trading starting August 1. The policy update prohibits extensions serving as on-ramps or trading interfaces for prediction-market platforms. The ban removes a key browser-based distribution channel used by platforms to reach traders. The move comes amid broader sector backlash and regulatory pressure on prediction markets. Google's Chrome Web Store policy change affects both extensions and web applications facilitating prediction market transactions.
Polymarket and Kalshi lose their most frictionless on-ramp for retail traders. Browser extensions let users trade without downloading standalone apps or bookmarking sites; stripping them from Chrome forces platforms toward less discoverable channels. The August 1 deadline leaves roughly three weeks to migrate users to direct web traffic or mobile apps before the plug is pulled.
That timeline compresses product and marketing cycles into days. Competitors without Chrome-dependent strategies gain a brief acquisition window. The ban also signals that platform distribution risk now spans private gatekeepers, not just courts and regulators. Every channel contraction shrinks the addressable retail pool and raises customer-acquisition costs at the worst possible moment.
Joins a tightening noose of state and private restrictions around Kalshi and Polymarket, including Michigan's injunction, Spotify's takedown demand, and Minnesota's felony ban.