But it only works when that 'greed' (I prefer 'self-interest') is directed toward creating value. Greed can be a good motivator but greed can be destructive to

But it only works when that 'greed' (I prefer 'self-interest') is directed toward creating value. Greed can be a good motivator but greed can be destructive to the market, too. See: Rent Seeking, Predatory Pricing, Protection Racket etc.