I teach that you should seek to learn from competitors; obviously never copy another business's idea or what they are doing, but you can absolutely learn from their mistakes or see what they are doing and discover ways to improve it. All of that analysis belongs in your business plan: make sure you have your competitors under the microscope and make sure that is a solid chunk of your plan. That is some of the best research and information you will gather about what will make your business successful in future.
So, why is business planning so crucial? In a word, it provides "clarity". Investing time to develop a plan provides precise clarification of the company vision to both employees and customers. In addition, it provides a mechanism to gauge the results of the business and provides the foundation for future growth plans. In the long haul, it enhances the company valuation through fiscal responsibility, which provides the story of opportunity to any future investor or employee. In short, the benefits of planning allow the company to articulate a common vision to align resources and make an efficient use of investment dollars. A company that is perceived to be a "well_oiled machine" is attractive on many fronts _ both externally with investors and internally with employees through job satisfaction and increased tenure.