Many enterprises continue to operate with this traditional structure, but others have taken changing views on management. Facing heightened global competition, American businesses are seeking more flexible organization structures, especially in high-technology industries that employ skilled workers and must develop, modify, and even customize products rapidly. Excessive hierarchy and division of labor increasingly are thought to inhibit creativity. As a result, many companies have "flattened" their organizational structures, reduced the number of managers, and delegated more authority to interdisciplinary teams of workers. Before managers or teams of workers can produce anything, of course, they must be organized into business ventures. In the United States, the corporation has proved to be an effective device for accumulating the funds needed to launch a new business or to expand an existing one. The corporation is a voluntary association of owners, known as stockholders, who form a business enterprise governed by a complex set of rules and customs. Corporations must have financial resources to acquire the resources they need to produce goods or services. They raise the necessary capital largely by selling stock (ownership shares in their assets) or bonds (long-term loans of money) to insurance companies, banks, pension funds, individuals, and other investors. Some institutions, especially banks, also lend money directly to corporations or other business enterprises. Federal and state governments have developed detailed rules and regulations to ensure the safety and soundness of this financial system and to foster the free flow of information so investors can make well-informed decisions. 7