Earlier quoted context omitted.
What you see with Walmart is singular entity, owned by an obscenely rich family, who can strong-arm any supplier into accepting their terms. They have the massive capital to build a megamart anywhere they want, and have it run at a loss for however long it takes to drive everyone out of business. This absolutely kills local businesses and funnels money out of the area, leaving only the low wages paid to the local Wal…
Efficiency always drives out competition. There's still room for small merchants for anyone who doesn't mind paying the premium to shop there. But not many people are willing (or able) to pay that much extra to be greeted by a familiar local face. And no, I don't think the supply chains are actually more robust for local stores. I've had better luck at the local Wal-Mart than at other stores for TP and other hard-to-…
Walmart is so big that it utterly dominates the market, to the detriment of everyone else. But because they're able to sell everything at the lowest price, people go there. It's impossible to compete with Walmart.
It's a clear example of why the invisible hand of the free market is a dangerous myth.