The world's second largest mobile operator is not pleased with Google's dominance in the search and advertising market. In fact, Vodafone's CEO implied in a recent speech that regulators might want to act sooner rather than later to prevent an irreversible monopoly from forming. According to Michelle Donegan , Vodafone CEO Vittorio Colao showed during his keynote address at the Mobile World Congress that many companies compete within different parts of the mobile sphere.