I know it's not specficially what you're saying but I've never understood people complaining about the price of tickets including concession stand purchases in the price. That stuff is marked up through the roof, if the tickets are already a financial burden then it should be an easy pass. Or in the case of the theater if you have to or want to have a snack it's not that hard to sneak something in.
What I'm really replying to on this family topic pricing I think it's fairly recent but has nobody heard of
Cineplex's family day? $3 admission for a Saturday 11:00am screening of movies typically a few months out of circulation. That solves a lot of the pricing issue.