Well, not much anyway, because there is no business reason not to charge pretty hefty prices.
BUT, I, too am a Disneyholic, and there is no other similar experience that matches this quality standard.
I think Disney is a really good choice for families. It is time well spent and remembered together. Good families have the full range of vacation budgets--millionaires to modest wage earners. That is why, especially for the non-millionaires, it is so important to PLAN.
IF a average income family of four visits the park one day, we all know that day is a $300 to $500 day (counting food and lodging) at a MINIMUM. A few days of this and we are talking real after-tax money. So every day should count. The family needs some research, some searching for those better deals, some overall concept about the pace of the vacation, some setting of expectations and some consideration of what makes every member in the family comfortable.
As a Disneyholic who has thought a lot about this question, I think the experience at Disney is "tiered," and it works well for families at different budget levels. The parks are the best part of the magic and are, of course, the focal point of the vacation, no matter what the budget. The next tier is the lodging. No doubt about it--off-site is better for the vacation budget. Last tier, there is a lot of money to be spent at the better restaurants and all of the fancy diversions, like parasailing or special tours and so on. I believe these are wonderful, but in no way essential to having a magical vacation. Finally--I think this is more about judgment than budget--there is all the plastic and furry useless stuff one can buy, and I guess you can tell I have an opinion--photos are a great investment but STUFF is not.
I have been at several levels of this budget continuum, and I believe that the fun in the vacation is not all that connected to what you spend, although one must be prepared for the high prices. Spend what you can afford. Enjoy your family.