Edelman have some great data points in this custom research. If I was an entertainment brand I would be concerned about the drop in perceived value of their product to consumers. It’s also no longer important to be on top of the latest entertainment as it comes out. It may be the economy, or it maybe a sustained consumer change; either way things will get messy as we get increasing legislation that the entertainment industry has lobbied for.
Secondly, social networks represent a return to the pre-mass media where people entertained themselves, their family and their friends. Social networks aren’t channels, they are the competition.