Once he began carrying groceries, using his size to offer lower prices, smaller stores found it hard to compete.
The stores have found a niche in the market that Congress did not anticipate.
The stores in the business district will find theirs too.
Or a store may find that a particular size is not selling well and wants to clear the shelves to make room for fresh items.
With a little creativity, he said, stores can find locations that are not obvious at first glance.
He returned to the truck, found a jar in the back where he'd kept a store of matches.
He said the other stores would most likely find buyers, rather than go out of business.
"And many stores are finding it hard to remain profitable."
Book stores, popular in the city, also find an anchor in the neighborhood.
Most online stores find other companies to hold and ship their goods.