I'll give Yacht and Beach Club as an example to illustrate my concern.
It's a popular hotel in a prime location, that's beautifully executed and has a number of highly regarded amenities, of which the pool complex immediately comes to mind. People choose to stay there and pay a premium for all those things. The hotel sells itself and can stand on its own because of the quality of the experience it provides, that is recognized and valued by the customers who chose to stay there.
But the Disney of today would never build Disney's Yacht and Beach Club Resort for all the reasons I've outlined. It's not IP, does not promote another division of the company, is not obviously "Disney" in its imagery and the theme that gives its whole appeal would be seen as dated for not tying in with a current, trendy concept. They might build another deluxe hotel with a fancy pool, but it wouldn't be as timeless or tasteful in a way that appeals to a broad audience.
I think that's a problem that's limiting the parks and resorts and shows a misunderstanding of what gives them their appeal.