Interpublic Group: Publicis CEO Maurice Levy reportedly considered making a play for IPG, but he found the price too high. WPP CEO Martin Sorrell is not going to twiddle his thumbs while his longtime rival Levy one-ups him. At some level, it always comes down to ego. Expect Sorrell to pooh-pooh Publicis Omnicom as bad for clients, bad for staff, and bad for whoever loses the power struggle that a co-CEO situation presents. And then expect him to go hunting for an acquisition. IPG is the most likely combination for WPP to bulk up.