Cook, speaking in an interview with CBS News that aired on Tuesday, said Apple controlled a moderate share of the market but was not too big, and disagreed with calls from some U.S. politicians that the company be broken up.
On Monday, sources told Reuters said U.S. authorities were preparing to launch what could be a wide-ranging probe with oversight divided between the Federal Trade Commission and the Department of Justice. U.S. officials must still decide whether to open formal investigations. Technology companies have faced increased scrutiny on a range of issues from privacy and their impact in the 2016 election to advertising and their effect on the marketplace.