Randalls -- once the go-to store for grocery shopping in Houston -- has been edged out over the years by its competitors offering lower prices and wider selections. Paul Takahashi, who covers grocers for the Chronicle, talks with Nancy and Allyn about recent store closings. Real estate broker and retail expert Jason Baker also weighs on what Randalls has meant to Houston, the current power players, and how a desire for convenience is changing the grocery game.