Some businesses are highly complex whereas other businesses have a simple business model and very few employees. If you see your doctor for a personal health check they will start off with some standard tests and progress to more detailed tests if required. It is the same with businesses, there are significant similarities between most businesses so much so that standard health checks can be performed on almost any business. It is possible to run a business health check based on benchmarks from similar businesses. This however does not tell the business owner or manager if the business is going in the direction that they would like to pursue.
Back during the infancy of this software, most people would use it for just two reasons: to store data (especially customer database) and as a glorified calculator. Perhaps because those are a spreadsheets intended or more practical uses or that people are not really that trained to use its features to the fullest. You would even be surprised that up to now there are office employees who, when they are prompted to make some calculations, they would open their spreadsheet software and do the calculations there. However, as weird as that may sound, it is one of the ways that a spreadsheet can help speed things up in the office. Especially if the employee has been working on spreadsheets for a long time that making fast calculations using the cells has become second nature to him. But there are other good uses for this application.