They forget who actually holds the money in every transaction: the customer, and few transactions are as thoroughly optional as movie tickets.
I'm sure the talking and disrespect in the movie theater is a symptom of the problem. People no longer respect the theater because it's stopped respecting them, and in the process lost its own self-respect.
I'm going to blame this on B-school theory, particularly Michael Porter. What Porter did is take economic theory about the undesirable behaviour of monopolists and turn it around. "You should screw your customers and suppliers in this fashion!"
And in the short term, it absolutely works. In the long term you disgust the people who put you there -- your customers -- and most industries are not natural monopolies.