I have not seen that. More often, they seem to come in after the others have closed up shop.The downside is they put the general store or small grocers out of business who carry fresh foods and produce and then you are stuck with the awful canned, preserved food Dollar General sells. A $1 it’s not actually cheap always because of smaller size or portion
Nobody makes people buy the processed food and likely thats what would have been purchased if Sam’s Grocery had still been open instead of DG.