Big Tech CEOs Endure Hours of Withering Questions From Congress

The chief executives of four U.S. technology giants endured withering, rapid-fire questioning for more than five hours from lawmakers who accused their companies of using their power to crush rivals and squash competition.

Alphabet Inc.’s Google, Facebook Inc., Apple Inc. and Amazon.com Inc. were criticized for the power they wield over digital markets: Google’s control over internet search and online advertising; Apple’s tight grip over apps; Facebook’s acquisition of rivals; and Amazon’s leverage over third-party sellers.

“These companies as they exist today have monopoly power,” said Representative David Cicilline of Rhode Island, who is leading a yearlong House ...