Bill bulge owned a grocery store in missouri. in order to finance some inventory, he borrowed $3000 from big bucks bank. the written agreement called for 20% interest to be paid at a time when long term government bond yields were 12%. at maturity, bill refused to pay anything because he said the bank was guilty of usury. will bill have to pay anything?

Google started as one of many internet search engines, amazon started as an online book seller, and ebay began as a site where people could sell used personal items in auctions. these firms have grown to be so large and dominant that they are facing antitrust scrutiny from competition regulators in the us and elsewhere. did these online giants grow by fairly beating competition, or did they use unfair advantages? are there any clouds on the horizon for these firms -- could they face diseconomies of scale or diseconomies of scope as they continue to grow? if so, what factors may limit their continued growth?