[CAPTION]Say a company starts with a very low revenue figure in its first year and then lands a large customer just after the start of its second year. Image: Shutterstock[/CAPTION] “Meet the Companies Building the Future.” That’s the headline on the latest Inc. 5000, the business magazine’s long-running ranking of the fastest-growing U.S. private companies based on three-year revenue growth rates. Companies that make it onto this or any of the other competing high-growth lists out th...