Concessions are not counted in movie grosses.
Assuming that's true, it makes perfect sense given that most of us now have DVD or VHS players, pay-per-view, cable TV, cable TV movie channels & movies on network TV.
Would you expect otherwise?
I rarely go to see movies in the theater. But it has nothing to do with quality & everything to do with the fact that I know I'll soon see those movies on DVD or PPV in the convenience of my own home.