Was it shorthand, or a Freudian slip? Last Friday, Google filed court documents as it battles a breakup of its advertising technology business. In the filing, Google said the open web "is already in rapid decline."It seemed like a startling admission for a company that has been arguing that the web is healthier than ever. But when Business Insider contacted Google for comment Monday, a spokesperson said the filing was referring to "open-web display advertising" market — the ads that appear on websites and ...