Those goods would still have to be shipped to a traditional store, where traditional staff drove in and stood around and dusted it, so you could drive (or whatever) in and get it.

As opposed to drop-shipping the most economical one on demand, and not wasting all the time and shipping stocking places, hoping you'll come in and buy from them before the junk is obsolete.

Stores, except tailors and the like, are dead.

As for their warehouses, cities expand and real-estate, especially when at rock-bottom, is a pretty safe bet compared to renting.