Retail is an evolutionary business where only the strongest survive. Here in the Delaware Valley we've seen lots of old chains fall by the wayside. Almart, WT Grant, Two Guys (I thought they had a great business model,) Ames, Bradlee's, Montgomery Ward, and lots more have all been killed off.
The Two Guys chain was very impressive.They were essentially Walmart Super Centers, just bigger and more diverse. They included lumber yards, a full featured pet shop, furniture, an in-store restaurant, beauty salon/spa, groceries, home goods, huge electronics department, a massive jewelry department, cosmetics, clothing by the mile, and more. You could literally build and fully furnish a house in just the Two Guys store buying everything from the cinder blocks for the foundation to the roofing, and everything needed inside the house all in the one store. It was really all in one shopping experience. You could even have your car serviced in their garage while you shopped. The energy crisis in the seventies largely killed them with the high cost to heat and cool their massive stores.
In retail you can go from being king, to being out of business in a very short span. Right now, at this moment, online and convenience stores are ruling the day. The only thing constant in retail is change.
I have a suspicion that the near future in retail will be some combo of the old Best/Basco/Service Merchandise type catalog showroom where you'll simply point your smartphone at items you want to buy and their in-store computer will chat with your phone and gather the items and have them all bagged and ready for you to pick up as you leave the store. A relatively smallish store (at least out front) could display a ton of stuff in a smallish space with just one of everything on display. You just scan the item you're interested into your phone and it'll be there ready for you to pick up on your way out. They'll likely also have a web platform for stay at home shoppers and provide delivery. The self-driving vehicles that are coming with the new 5G tech will also change package delivery. Packages can be driven to the front of your house by an autonomous vehicle and then deposited on your porch or doorstep by a drone simply wandering back and forth from the self-driving delivery vehicle. Texts can go out to the buyer as the package is being delivered. UPS and Fed-Ex will be nothing but a memory.
Fly!!! Eagles!!! Fly!!!