Amazon.com (AMZN:$178): An excellent article, which highlights the advantages monopolies enjoy. In this case, Amazon uses their "mostly" free two-day delivery service to keep customers coming back for more! This is a win for shoppers and for the company. Importantly, it makes it extremely difficult for others to compete. Over 30 themes and monopolistic companies are detailed in the book,"The Monopoly Method: An Insiders Guide to Navigating Wall Street and Becoming a Better Investor". Get yours at Amazon (of course!) for only $9.99!