Society in steady economic growth has faced up to the limitations of natural resources and the environment. Changing value in sustainability has been required. This paper will discuss the sustainability of companies. We will focus on two types of sustainable organizations, Japanese long-established businesses and biological organizations, and analyze the concept of sustainability within these two organizations. Japanese long-established businesses have outstanding longevity that has been reported internationally. The three factors revealed by the long-establish businesses' survey indicate that 1) escape of a rapid growth and a control of growth, 2) emphasis on the value of interaction, 3) spontaneous change within an organization. Those three are similar to the competitive coexistence for biological organizations, and suggests the importance of sustainability.