FILE - In this Sept. 24, 2019, file photo people walk by a Google sign on the campus in Mountain View, Calif. USA., The  coalition of technology and publishing companies, Marketers for an Open Web said Monday Nov. 23, 2020, they have asked  U.K. competition watchdog  to investigate Google's plans to revamp its ad data system, saying the changes would cement the U.S. tech giant's online dominance. (AP Photo/Jeff Chiu, File)