Admission prices keep rising, yet not bad with multi-day passes. In April we will fly down on Friday and return home 9 days later on a Sunday. We don't go to the parks on travel days, and take one additional day off to swim, etc. So we have 7 day passes, which are currently $335. That is $47/day... which is not that bad.
I think that calculation is the first one in this thread that really hits home the overall value. $47 a day is about the same as you'll spend at any amusement park in the country. (And as a PP pointed out, other local attractions such as children's museums and zoos can also be pretty pricey.) The gate prices at most Cedar Fair and Six Flags parks are in the $40-$50 price range. Dollywood clocks in at $73.13 after tax. So for $47 a day per person, you are getting all of Disney's magic.
The average cost of a new attraction at most amusement parks is in the $10-$20 million range. The average cost of a new Disney attraction is more like $100 million, so it makes sense for tickets to be more expensive considering the level of theming their attractions include. They also have a significantly higher labor cost to keep the parks running every day than regional parks do - BTMRR has 15-20 CMs working at a time, whereas most coasters in regional parks have 4-8 people working them at a time. That isn't including the extra personnel that they have such as the FP+ team, the characters and their escorts, parade personnel, PhotoPass photographers, and who knows how much other extra staffing in areas we don't even see. Continue to add in the complimentary on-site transportation on the busses, monorails and ferry boats, which are not free to operate or staff.
Now thinking about the resorts - when you price out the area hotels, you'll find Disney resorts, especially value and moderate, are very competitive to the market around them. The cheap hotels in Kissimmee are cheap for a reason - and they're also sometimes terrifying. I've had some truly awful experiences when trying to stay cheap in that area. But compare prices to the Marriotts, Hiltons, and the Rosen hotels, and you'll find the prices right in line with them, but with the added benefits of complimentary ME transportation, free parking if you've got a car, and the park benefits such as ADRs, FP+, and EMH.
So overall, I don't think Disney is at all out of line with their pricing. Obviously, neither do the visitors that keep coming in ever increasing numbers. Sure, Disney is not a vacation for everyone - and that's ok. But it's also not completely out of reach for most people. DH and I have never stayed on-site or had a multi-day trip because it wasn't a priority for us. We prefer to travel to multiple amusement parks every summer rather than spending a week at Disney, but if we made sacrifices in other areas, even on our lower-middle-class income, we could easily save up for a full Disney trip, and I know many people that do exactly that.