Which is a key point, and probably the one wensing was originally trying to make. If you can build a business with the intent of doing something like logistics extremely well (which lowers your costs) then you can pass that on to the consumer of your products. They don't give a rats ass about your logistics, but they do care that whatever the blackbox your warehouse does ends up shaving 20 cents off that bag of chips. WalMart still gets about the same percentage of profit, but the overall cost of the product is less.
Lowering your price just to be cheaper than your competitors only cheapens the market and doesn't add anything of value to the product. You will quickly learn why everyone else keeps their margin up higher than yours when you can't expand due to lack of funds, or you have to cut something else out to keep in business.
