The entire movie theater industry is dead.
Even if cell phones were eliminated (which in my experience have been more or less a non-issue in theaters) you've still got the fact that its $8 for a ticket and then $5 for a popcorn, $5 for a soda, $5 for a box of Junior Mints... Its simply too expensive for the 2 hours of (possible) enjoyment, especially when a couple of months later you can watch the movie on Netflix or pay $1 for it at Redbox. It used to be you could offset this by the fact that you were getting a higher quality picture and sound, but anymore a HDTV and surround sound are pretty common. 3D is simply a gimmick, its fun for a movie or two but doesn't really add much to the experience. I mean, other than for a midnight premiere, does anyone actually go to the movies anymore?