https://www.reuters.com/article/us-france-competition-fintech/french-watchdog-warns-of-big-techs-sway-over-payment-services-idUSKBN2CG0WI >Digital payment services developed by U.S. tech giants such as Apple and Alphabet's Google risk reinforcing their market power by giving them greater sway over consumers' data, France's antitrust authority said on Thursday.