I respectfuly disagree.
If Disney sees there is enough interest in a certain type of resort and feels that it can make a good profit with a certain type of resort or room type than yes Disney will build them.
When WDW first opened they only had monorail resorts and Ft. Wilderness.
In the 1980's WDW paired up with Priemer Cruise Lines to offer a
Disney Cruise. They also had the option of a land - sea cruise.
Too many of the monorail rooms were being filled by cruise guests so WDW built and opened up a resort (CBR) with smaller rooms (that only slept 4 instead of 5) so that they could put guests who cruised in the lower catagoiers in a room that was not as pricey as the monorail resorts.
They found a large portion of WDW guests who were not cruising also liked the option of staying at a less expensive resort.
Then came DVC for more options.
Then came POR the AB section--A more affordable option than a deluxe resort for families with 3 children.
Then came the Family Suites --- a more option for families with 4 children.
WDW has built lots of new resorts and added more room type options.
At this time WDW is exporing an adult only resort.
Since WDW is doing the asking my thoughts are it may already be in the works.
Just my 2 cents