Hubert Burda Media One of the fiercest critics of ‘Big Tech’, author and academic Scott Galloway, has admitted his bearish call on Afterpay was wrong and warned that America’s internet giants are poised to consolidate power following the coronavirus pandemic. Professor Galloway, who teaches marketing at NYU Stern School of Business and was author of The Four, has in recent years emerged as one of the leading critics of America’s technology giants.