You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract John Wren, Maurice Levy Have Seen The Future: It's Big. But Is It Better? Case Is Proving Tough Sell to Wall Street, Ad Industry By Abbey Klaassen, Published on August 04, 2013 4 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Register Now Already a member? Log in.