Question: Four main types of financial-service firms-depository institutions, investment banks, insurance companies, and finance/credit card companies-are in intense competition with one another today. Using Standard & Poor's Market Insight, Educational Version, available to users of this McGraw-Hill book, describe the principal similarities and differences among these four types of companies. You may find it helpful in answering this question to examine the files on Market Insight devoted to such financial firms as Bank of America (BAC), Bear Steams Companies (BSC), American International Group (MG), and Capital One Financial Corp (COF).