The billionaire met with senior brand executives at the Cannes Lions advertising festival this week, after crudely telling them off last year. internal-storyline-no, Artificial Intelligence, Advertising and Marketing, X (Formerly Twitter), WPP, Musk, Elon, Read, Mark (Marketing Executive), Yaccarino, Linda The billionaire met with senior brand executives at the Cannes Lions advertising festival this week, after crudely telling them off last year. NYT > Business