I think what DVC will have to do and what the quitclaim offer represents, is either buy and hold or buy and sell at reduced costs 15 yrs of points in 2042.
Should DVC buy and hold quitclaim deeds, they needn't raze buildings in 2042. They'll simply be a very large tenant with tons of points to rent out.
All of us owners who rent our points see a profit over MFs. DVC will too, on a much larger scale after 2042. It's not their perfect business model, but hey, they still have a de facto deluxe resort where a good chunk of the upkeep is subsidized.
Between renting out their own points and reoffering extensions closer to 2042, DVC certainly isn't going to lose money on OKW.
At worse, they just won't make as much as they could have if they had planned better.
I think they are planning better now. We'll see what VWL does with extensions when the new resort opens. My guess is that they wouldn't be planning to systematically revisit 2042 resorts unless they also have a plan for how to keep all the resort's MF payers happily paying after 2042.