Originally Posted by PSound
Box office difference between 2007 (the starting point you listed) and 2010 (last full year of data) was right around $1 billion dollars.
Yes, but box office has been going up because of ticket inflation, and new release home video prices have been relatively stable over the years (which is a good thing, I think). To get an apples to apple comparison you would need to adjust the box office figures to remove the inflation factor out. For example 2010 dollars are only worth 95 cents in 2007.
Anyway, it's obvious that consumer are willing to accept inflating theater ticket prices but not home video.