HAILEY, Idaho — Robert Kraft, the owner of the New England Patriots, flies in a Gulfstream G650. So do Jeff Bezos and Dan Schulman, PayPal’s chief executive. The jets, roughly 470 of which are in operation, retail for about $75 million each.Most days, those planes are spread out, ferrying captains of industry to meetings around the globe. But for one week in July, some of them converge on a single 100-foot-wide asphalt runway beside the jagged hills of Idaho’s Wood River Valley.The occasion is the annual Sun Valley conference, a shoulder-rubbing bonanza organized by the secretive investment bank Allen & Company. Known as “summer camp for billionaires,” the conference kicks off this year on Tuesday, and it dra …
