One hallmark of a competitive market is that new firms are able to—and do—enter it… The key economic consideration is the relative difficulty of over… - Neil H. Jacoby

In a world market that was free of all taxes, royalties, or other governmental constraints, and in which competition was effective, the price of oil would be very low. But the real-world market for oil is dominated by high taxation by the oil-exporting nations, and, since 1972, by concerted efforts of the members of the OPEC to raise prices and to restrict output. Because of effective competition in the industry and the power of OPEC, an international oil company today has relatively little influence on the price of oil to consumers.

World energy problems entered the headlines during 1973 and 1974 when members of the Organization of Petroleum Exporting Countries (OPEC) unilaterally quadrupled the price of crude oil. Concurrently, members of the Organization of Arab Petroleum Exporting Countries (OAPEC) cut back production and imposed a temporary embargo on shipments to the United States for political reasons. Suddenly, the industrialized nations awoke to their heavy and increasing dependence upon the abundant supplies of oil from Africa, the Middle East, and Latin America.

Because some conglomerate, and other, mergers have proved to be unsound and failed. It has been proposed that government should prohibit such mergers. But there is no feasible way to identify bad mergers in advanced; only time and the test of market competition reveal them.