Apple CEO Tim Cook to testify Friday as Epic trial nears end

FILE - In this Oct. 28, 2019 file photo, Apple CEO Tim Cook attends the world premiere of Apple's "The Morning Show" at David Geffen Hall in New York. Cook will take the witness stand this Friday, May 20, 2021 in a high-stakes courtroom battle challenging the lucrative commissions that the iPhone maker has been raking in from a mobile app store that has become a cornerstone of its $2 trillion empire. (Photo by Evan Agostini/Invision/AP, File)