Have you compared Disney price increases with competitors’? With other luxury, leisure items? Time series data for one company doesn’t provide enough info to analyze.
Take this for what it's worth. A night in Breckenridge with snow is about $1000 for ski-in properties. Vail, Beaver Creek even more, and I don't even want to mention Aspen. Lift tickets are $140 each, and the lifts are open 9-4. Ski lessons were $900 a day for three kids, not including lift tickets. They had lunch on the mountain -- $87 for four personal pizzas, soda and fries.
A week for a family of 5 -- with discounts -- and Beaches Turks&Caicos is 16K, not including flights.
I don't think WDW is cheap, but its in line with other vacations.