Simply speaking, in order to create a competitive advantage, a company add more economic value than its competitors. Not only do companies have to create a competitive advantage(i.e. higher economic value added), but this advantage must be lasting. This second point of sustainability is vital for a company to hold a dominant position. By constantly adding economic value and maintaining higher levels of profitability, a company then has room to continue developing new products and pursuing innovation.
To actually measure the economic value of any company's products, there are accounting methods that can assist in the analysis of performance. However, there are limitations that leave these accounting findings somewhat subjective, so managerial judgment is important in determining the relative validity of the accounting methods used for a particular company.
Finally, the competitive edge a company pursues is of the most concern to the parties who provide funding and resources for the firm to operate. These parties are the stakeholders of the company, and they may be individual investors or institutional investors. They receive residual benefits the company produces by the economic value added to the company. A company should strive first and foremost to satisfy the interest of the stakeholders because they are the owners of the company.