"Contrary to most popular accounts, the growth of the Internet has not obviously caused a large decline in newspaper readership. Readership has fallen steadily since the Internet was introduced in the mid-1990s, but it had been falling at almost the same rate since 1980, and the small acceleration of this trend accounts for a drop in readership of only about 10 percent. This is consistent with more systematic evidence in Gentzkow (2007) and Liebowitz and Zentner (2012), suggesting that online-offline substitution is relatively limited, as well as survey evidence showing that the Internet currently accounts for less than 10 percent of total time spent consuming news (Edmonds 2013)".
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"Each newspaper has physical space for exactly one advertisement. All readers of the newspaper must see the same ad. The marginal cost of printing ads is zero. Each website also has physical space for exactly one advertisement, but these ads are targeted, so the website can show different ads to different consumers. Consumer types are observable to websites".
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