Can Industry Consolidation Lead to Greater Efficiencies? Evidence from the U.S. Defense Industry

Nayantara Hensel

Business Economics, 2010, vol. 45, issue 3, 187-203

Abstract: The question of whether mergers in various industries lead to greater market power or improved efficiencies has been the subject of numerous public policy debates. This analysis focuses on the impact of consolidation in the U.S. defense industry over the past 20 years and examines the reasons behind the wave of defense consolidation, the results in terms of the reduction in contractors, the antitrust response to mergers, and evidence on the impact of the mergers on weapons systems’ total and per-unit costs. The analysis finds that merger activity was driven less by declines in spending following the Cold War than by a stronger economy and a vibrant financial market. The cost data show that 39 to 44 percent of systems experienced statistically significant change in either total costs or per-unit costs following a merger. Somewhat more systems were likely to exhibit lower postmerger per-unit costs than higher per-unit costs, suggesting improved efficiency. The analysis also examines the impact on weapon systems cost by type of weapons system, manufacturer, and service (Army, Navy, Air Force). The evidence suggested greater efficiencies following consolidation for many sectors. Army and Navy systems overall showed lower per-unit costs, but the Air Force weapons systems showed mixed results.

Date: 2010
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