bigger, not better

I just saw an astounding set of numbers relating to WalMart.  The company has over 2.1 million employees, sells more than 400 billion dollars of merchandise worldwide and owns more than 34 square miles of real estate.  Many countries do not approach those figures.  What that means when Wally World negoitiates with suppliers, even giants like Procter and Gamble is lower prices.  We should make WalMart the preferred supplier for all Medicare beneficiaries and get a twofer;  keep the program private, yet have a company which can beat the drug companies into submission.  NOT!  If that came to pass, WalMart would probably have more power than the US government.  But it is an interesting reflection on economies of scale.