Mobile network investment, along with job creation and service innovation, are under threat if regulators do not ditch ‘legacy’ thinking. That was the warning Vittorio Colao, Vodafone’s chief executive, gave at the recent GSMA Mobile World Congress. “We need vast quantities of spectrum, which creates efficiencies and lower prices,” argued Colao. “The [current] thinking of allocating spectrum a bit at a time should change. Investment is under threat.”