look for the way to obtain the key resources that the corporation dose not have and analyze their affects on the core competencies. In reality, qualities and quantities of resources are unevenly dispersed among competitors. In most cases, it is difficult for a corporation to find a new business with no distinctive competence into a sustainable competitive advantage, a corporation not only needs to possess a unique resource. Assets of resources are accumulated over the time. The coronation may get economic rent when it gains the key resource at lower cost. In addition, the new capability may enhance or destroy the current core competencies. Only those that do not destroy the core competencies and can be obtained at lower cost can match the corporation’s core competencies.