Peter Cancro, at 17, bought a sandwich shop with a $125,000 loan from his football coach. Renaming it Jersey Mike’s Subs, he built it into a $8 billion empire with nearly 3,000 locations worldwide. Despite setbacks, including a tough 1991 recession, Cancro’s leadership kept the company growing. Blackstone now owns a majority stake, but Cancro will remain CEO with a significant stake.