Oracle CEO Larry Ellison reacts after Oracle Team USA beat Emirates Team New Zealand in race 17 of the America’s Cup Finals last night in San Francisco. Photograph: Ezra Shaw/Getty Images

What would you do? On one hand, you have 60,000 people at a conference, plus hundreds of thousands online, waiting for you to appear and speak to them(...)

Microsoft chief executive Steve Ballmer: one of the last of the tech chief executives who has wide public recognition, an extensive history in the industry and a forceful and singular personality. Photograph: Reuters/Lucas Jackson

Is the stage finally going dark on the era of the rock-star technology chief executive?The question arises with the imminent departure of chief execut(...)