On July 4, 2021, less than a week after ride-hailing giant Didi’s U.S. IPO, Chinese regulators ordered Didi removed from app stores in the country. The purported reason—China’s Cyberspace Administration’s concerns over the app’s illegal data collection and storage practices. Didi reportedly stored Chinese users’ data in the U.S., although the Cyberspace Administration has not specified the nature of the data-privacy violation. With a near-monopoly in China’s ride-hailing market, Didi’s data collection spans a wide range of user-mobility data. The Cyberspace Administration’s July 4 “announcement is the latest in a string of actions by government authorities aimed at reining in...