1. You must compete.
2. You must not win.
At least that's how too many people think of Walmart. See this interview with a former Walmart manager and ask yourself, "Now just how is it that consumers are being hurt here?" (pointer via hispanicpundit).
Speaking of Walmart, there's a spoof going around announcing Walmart's entry into the ballistic missile submarine market. Maybe Canada should have shopped at Walmart instead of buying those used subs from the UK!