I'm going out on a limb and assuming now. Every pair of feet in the park, ends up dropping money on something Disney. It doesn't have to have been spent inside. The park is a giant advertisement for anything Disney. This is a place to to grab a hold of Disney consumers new and old.
As I have worked at big stage shows in Las Vegas, I know it's more about a full house,, overbooking and standing room only than the end of month totals. Seats are given away, to ensure capacity is met. Discounts, like, groupon, living social, 2 for one, group rates, convention specials, locals, etc are financially more important than the full price of admission.
Disneyland is no different.
---------- Post added 11-28-2012 at 11:22 AM ----------
I still do not think the topic title question has been answered.
rack it up to envy or socio-segregationalistic ideals placed upon them by those who claim to dislike them.