Longtime Google rivals like Yelp and DuckDuckGo received a huge victory on Monday when a federal judge ruled that Google is an illegal monopoly. But their statements on the ruling expressed restraint. Judge Amit Mehta’s decision on how to restore competition will be just as — if not more — important as his finding that Google violated antitrust law. Judge Mehta’s decision will be as consequential, if not more so, than the Microsoft antitrust case 23 years ago.