Amazon is a  “monopoly.”   But whether it, and the other four U.S. tech giants (Facebook, Google, Microsoft and Apple) and the two Chinese (Alibaba and Tencent), will continue to grow depends on government regulation, says Sir Martin Sorrell, Founder of WPP.

While not predicting imminent government intervention, he notes that these companies are increasingly in the spotlight with issues around privacy, workforce conditions and industry competition.

This video was recorded yesterday at the annual DMS conference presented by LUMA Partners. It was taped after his fireside chat with LUMA’s CEO Terry Kawaja.