Page Six is gloating this morning. Talent agency William Morris just sold its Beverly Hills headquarters for $143 million and the Post gossip section totally called it, even in the face of William Morris' heated denials. "We told you," brags Page Six. But here's the thing: It took three and a half years for Page Six's gossip to come true. So for their scoop to be valid, you have to believe the headquarters sat on the marker for several years, even though it listed during one of the most frenzied commercial real estate markets ever, only to find a buyer in the worst office downturn in four years. Or maybe a company "desperate... to raise cash" (according to Page Six) took three years to organize a fire sale. Not likely.