Economics

1 Why do you suppose that some publishers are selling space for advertisements in their e-books and sometimes even in physical books? 2 From an economic standpoint, how could we explain the willingness of someone to pay $19.99 for a physical book that is available as an e-book for $9.99? 3 If the industry sales shares of the top four publishers in merged to form a single company would the four-firm concentration ratio change would the HHI change? Explain 4. How would the prices that you pay for textbooks likely change if the textbook publisheers in Figure 26-5 switched from behaving no cooperatively to determining production and prices collusively? Explain your reasoning.