Until 40 years ago, the federal government actively tried to help with this: Competition regulators rigorously monitored mergers and enforced the Robinson-Patman Act, a 1930s-era law intended to prevent suppliers from offering better pricing to big retailers than to independent stores. By the 1980s, however, some economists argued that allowing big retailers to expand and negotiate favorable deals would bring lower prices for all. The Robinson-Patman Act, and an underlying desire to protect small businesses, remained popular with the public, so Congress never moved to repeal it, but regulators increasingly stopped enforcing it. This era gave rise to a rash of consolidations and a huge building boom by the likes of Walmart and Kroger. And as the power of retail chains grew, more small businesses folded.

Once again, look to the 80s for the architecture of our misery. Fucking baby boomers.