Agencies Need To Change And Experiment Like Marketers: S4’s Sorrell

CANNES—The world’s biggest agencies are “strapped” by their structure and hesitant to experiment, while advertisers are taking back control and experimenting more than ever, according to Sir Martin Sorrell. “It’s not in-housing, it’s part of a much broader trend,” the former CEO of WPP says in this interview with Beet.TV at the Cannes Lions International […]