The resource based view of management suggests that various forms of capital (e.g., financial, physical,human, etc.) create a consistent source of competitive advantage if they fulfill four distinct criteria (Barney &Wright, 1998). First, capital must add value to the business. Second, capital should be unique to the firm or rare within competing firms. Third, each form of capital should be difficult to imitate or duplicate. Finally, each form of capital should be difficult to substitute with other available products or services.