Many observers tend to conceive any changes in media businesses as trends that are irreversible or to combine them with other changes to make sweeping generalizations about industry conditions. The results are often wrong and distract observers from asking deeper more appropriate questions about longer-term developments and how media companies use the resources they have. To understand changes one needs to consider developments separately to determine their origin and expected duration. This allows one to determine what are the result of external trends and what are the result of company choices. Only then can one begin combining them with other observations. Thus, one needs to consider whether the ratings increase for AMC is due to people spending more watching cable channels or an effect of the AMC's investments in quality programming and the popularity of programs such as Mad Men? If it is the former, one can enjoy benefits with little effort or extra investment; if it is the la...