Big box stores, not just big stores. From the from door to one to the front door to the next is just barely reasonable walking distance - and that is assuming you take unsafe shortcuts, go around the parking lot on the sidewalks and it isn’t a reasonable walk (if there is snow they pile that between the two doors). If you want to go to some third store instead of the second you can’t get there in a reasonable walk.

there are many different ways to do a big store. Big box stores are not necessarily any bigger than the others, but the layout of the doors is such that anything other than driving is discouraged by the design and if you do anyway you realize it isn’t safe. There are other big stores where walking is reasonable.