Today, pizza powers a $100 billion dollar global industry -- but when the Carney brothers opened the very first Pizza Hut in 1958, it was still practically unheard-of outside major US cities. Since then, the passion for pies has grown like crazy, fueling a competitor named Domino’s and taking these one-time mom and pop joints global. But when their businesses began to rise, they inspired a whole host of competitors to join the market, forcing both companies to innovate at a rapid pace. Listen to the latest season of Business Wars: Pizza Hut vs. Domino's now at wondery.fm/pizza_TOH.