Over the past two decades, TJX (NYSE: TJX) has upended the U.S. fashion retail business with its off-price T.J. Maxx and Marshalls chains. A couple of years ago, it surpassed No. 1 department store chain Macy’s in terms of revenue, and that gap continues to grow. TJX’s massive success has inspired a host of competitors to enter the off-price business.