Nov. 30 Asbury Park (N.J.) Press on the rise in air fares: The nation's major airlines almost in unison decided ... to charge more for their services. Out went most discounted ... fares and in came ticket price increases of up to 30 percent. Since deregulation, competition has led to major mergers and the demise of more than 100 small airlines. Uncle Sam has done little to stand in the way of acquisitions that have placed control of two-thirds of all domestic flights in the hands of eight carriers, several of which also control airports and reservation systems. The round of fare increases and rising prices in other industries may be just the beginning _ unless the government more vigorously enforces antitrust laws.