Grocery (Short Mom & Pops; Long Dollar Stores & Judges)

This is a good example of what happens when a Walmart ($WMT) rolls into town, prices compresses like a boss, and puts local shops out of biz. People have to drive 40 minutes to go grocery shopping. That's bananas. Which explains Dollar General Corp's ($DG) strategy to, as the Wall Street Journal put it, "build thousands more stores, mostly in small comm…