There's a digital divide among superstore chains in an era where digital delivery is rendering a lot of physical selling space obsolete. 

In this video, longtime Fool contributor Rick Munarriz explains why Bed Bath & Beyond (NASDAQ:BBBY) and Costco (NASDAQ:COST) are holding up well at a time when Barnes & Noble (NYSE:BKS) and Best Buy (NYSE:BBY) are turning to dramatic makeovers to remain relevant.