The entrepreneurial urge is a powerful one. Entire tomes have been written about people who have started their own businesses and risen to the heights of success. But the simple fact is that not everyone has the time, dedication, or wherewithal to build a business from the ground up. Fortunately, there's another way. One of the more common ways to scratch the entrepreneurial itch is to acquire a company that already exists. There are actually a number of advantages to buying an existing business.