It's possible, just unlikely.

The reality is a small business owner does not have the time or wherewithal to negotiate large contracts across hundreds or thousands of brands. They may nail SKU's and quantities better than a Wal-Mart or Dollar General, but at the price of higher costs and lower selection.

You don't really see large scale backlash in communities against these stores for this reason - buying branded at a reasonable price point is foundational for a good quality of life in modern society.

Most people vote with their feet, and are happy with the tradeoff.