If anything, it should show movie theaters that if they dropped their own prices, more people would go to the movies...
I also wish it wasn't essentially a flat price for everything. A small, medium or large anything is generally just fifty cents to a dollar away from any other size. I want a small soda and popcorn I get pressed to size-up for that extra few cents to get a gallon/barrel of each.
Not that it's your problem as a consumer, but factor in that your ticket price pretty much all goes to the studio. (correct?) And getting $8.50 for the large which costs $0.14 better than getting $8.00 for small which costs $0.12