But although a combined firm will allow for more pricing power in general, the decrease in competition could present regulatory hurdles in the U.S. and Europe. Client conflicts also could be an issue, as rivals such as Coca-Cola Co., PepsiCo, McDonald's, Yum Brands' Taco Bell, Johnson & Johnson and Procter & Gamble now find themselves under the same umbrella.
Omnicom Group, based in New York, owns BBDO Worldwide, DDB Worldwide Communications Group and TBWA Worldwide, among other agencies. Paris-based Publicis Groupe SA runs its namesake agency as well as Leo Burnett Worldwide, Saatchi & Saatchi and DigitasLBi. Their merger creates a company with combined annual revenue of about $23 billion, leapfrogging them over current London-based industry leader WPP.
For the first year, Omnicom Chairman Bruce Crawford will serve as non-executive chairman of the new company. He will be succeeded by Elisabeth Badinter, the current Publicis Groupe chairwoman, and daughter of its founder, for the second year.