You have a preview view of this article while we are checking your access. When we have confirmed access, the full article content will load.“It is extremely satisfying,” Margrethe Vestager, the European Commission’s top antitrust regulator, said about her time in office.Credit...Kevin Faingnaert for The New York TimesMargrethe Vestager, the European Union’s antitrust regulator, who put technology’s harms on the global agenda, reflected on a decade of taking on the biggest companies and what com...