Are there any statistics that show the inflation adjusted cost of music, theater movies, take home movies (DVD/VCR) over time? There have been delivery changes, such as DVD, CD and now iTunes, Amazon etc, but it would be interesting to see how the price of entertainment has changes from the 70s, 80s, 90s, 00s, etc. You could even add broadway shows, live concerts and other forms of entertainment into the mix.
I would wager that the adjusted price of pretty much everything, outside of food and energy, has decreased somewhat over time in the US. Especially non essential items. I wonder if music and movies fall into that category.