O2 chief executive Ronan Dunne believes that a generation of leaders have failed to leverage the power of their brands to positively contribute to society. Speaking at The&Partnership 'Advocacy is the New Advertising' event in London, Dunne said: "Millennials have a different attitude to the balance of doing well and doing good. People of my generation think you do well first and then you do good. The younger generation are clear that you do them in parallel." Dunne claimed that over the past decade corporate leadership has "fundamentally failed."