Sorry, I am unable or willing to talk you into taking a DCL cruise. There are a whole lot of positives about these cruises, but if you are comparing prices between DCL and just about anyone else, you shake your head and wonder - "how can they charge those prices". We cruise DCL a lot, but we look for value, compared with other DCL cruises and to new locations. We don't sail with a veranda (unless DCL upgrades us) nor in Concierge - those prices are CRAZY
I have seen the problem and it is US!!!
All things Disney (well except ABC/ESPN) are "must do" items for families - and then they hook you in! And you usually want to come back again and again. These Once In A Lifetime trips become an annual or every two year routine. 30 years ago these trips by families were not as frequent as they are now.
With all of the current demand, and newly minted families are created all of the time, the demand stays high. And the supply is limited - CA and FL in the USA for the parks, and only 4 ships. So pretty limited supply.
And in the Parks and on the Ships Disney has NOT found the high-point for pricing yet (unfortunately). Disney (as a FOR Profit enterprise) needs to keep raising prices (unfortunately) until the higher prices start impacting attendance / demand. They are not there yet. Yes, people complain and drop out / away. Especially those that have "participated" over a longer period of time - Disney has been "declining by degrees" meaning that the service provided today is a little (hardly noticeable) than last year, and the year before and the one before that, etc. So that over time you really notice that you are paying a lot more and receiving a reduced experience. That's why "they don't care" that the long time people drop away, because of all of the new people taking their "places" are very happy about their first (or second) trip to the parks or on the ships.
The good thing about the High Prices Disney charges (or will charge) is that at some point - especially for the parks, is when the price is "too high" for most people, the people that can afford the price will have a better experience because of fewer crowds.
Fortunately, cruise lines "need" to sail close to full all of the time. So DCL will not be able to raise their prices to reduce the number of people sailing - or else they will have to increase the use of discounts (FL, MIL, *GT, KSF, etc).
But the issue as I see it is that DCL continues to Raise Prices and Provide a declining experience. They are heading to the Reverse Priceline Effect in that they will be charging for a 4-Star experience but providing a 2-Star cruise. (my Priceline Effect definition is: 2 star people staying at a 4 star hotel - which I assume really annoys the 4-Star people. )