AEG Live, the company that persuaded Michael Jackson to sign up for 50 nights at the O2 arena, is facing a liability of up to £300 million and a dark house for the next nine months. It was Randy Phillips, head of the US entertainment company that turned the derelict former Dome into the UK’s most popular new arena, who persuaded Jackson to return for a stunning series of “farewell” concerts, beginning next month. The announcement, fuelled by a rare public appearance by Jackson at the venue, sparked an online frenzy, some 360,000 registering applications before sales had even opened....