It follows the fall of movie theatre cinema behavior and it comes down to one thing: money.
As in, "I paid a ton of money for this experience so I'm going to enjoy it the way I want."
Theatre owners don't help by treating it like an amusement park, selling popcorn and concessions in noisy cellaphane bags.
"Hey little girls, look at all the men in shiny shirts and no wives!" - Jackie Hoffman, Xanadu, 19 Feb 2008