I had heard that too but didn't really believe it. It seems that there is a sliding scale for how much of the ticket price the theater keeps and it goes up the longer they play the movie. So opening week they might only get 10% but by the 4th or 5th week that could be up to 80% - except no one is watching anymore at that point.
Also, the theater I mainly go to doesn't put much effort into their concessions. They have about 6 cash register to serve people and it's rare that more than 2 are open, even when there are huge lines. Plus they have 2 satellite concession stands that I've NEVER seen open.
I think the real money is with dine-in theaters, esp. if they serve alcohol. I have one like this near me and I love it. Sure, I'll drop about $30 bucks but I'll have a decent buzz by the middle of the movie and then still be straight enough to drive safely by the time it's over. It's reserved seating which I like too and the seats are amazing. Big leather seats that just sort of swallow you up - and they recline. :awe:
Here are a couple of good articles I found that support most of what I've said. The second one is pretty old but probably still applies.
http://www.businessinsider.com/movie-concessions-drive-amc-earnings-2015-2
http://themovieblog.com/2007/econom...e-the-money-goes-and-why-it-costs-us-so-much/