How would you define Amazon's industry? What difficulties do you encounter identifying primary competitors and key lines of business?There has been a general trend toward "bricks and clicks"the combination of Internet and traditional retailing outlets. How has Amazon succeeded as an e-tailer without brick-and-mortar operations?Given its Internet base, can Amazon's success be easily duplicated by copying its web materials? If so, why has Amazon been so dominant in recent years?With myriad websites that offer price comparisons that exist for book and other e-tailers (e.g., www.bestbookbuys.com), is it possible for Amazon to maintain a strong customer base without an extreme emphasis on low prices?