Is Wal-Mart a house of cards?

Love it or hate it, Wal-Mart has become a polarizing force in our nation's never-ending bitchfest towards eachother.  This article ties it to "House of Cards," which I keep confusing with "Game of Thrones," which is allegedly fancyporn.  When I was growing up, I do not recall anyone getting worked up over Gold Circle, Hills, Zayre, K-Mart or any of the other "discount" chains.  Well, maybe K-Mart.