Write a research paper about the impact of the online sales.

Write a research paper about the impact of the online sales. How companies like Amazon and Zappos compete with the physical stores like Dillards or Neiman Marcus (departmental stores). 1. How Amazon and Zappos earn money? 2. How they organize stocks and how they save money? 3. What type of delivery they use, and what type of market strategy they have in place? 4. What positioning have these two companies in the market, how are they perceived? 5. How they gained popularity? 6. What marketing mix they use (product, place, promotion and pricing strategies)?