If Omnicom’s acquisition of Interpublic (IPG) goes as planned, the ‘big six’ holding companies will become the ‘big five’ before 2025 is done. Through its reported $13.25 billion acquisition of its rival, Omnicom will now be the dominant network in the U.S., competing with French powerhouses Publicis Groupe and Havas, U.K.-based WPP, and Japan’s Dentsu…Read More