Sure as I am an owner there. It is owned by DVC members except for the approx. 2% owned by DVC and the other points DVC has bought back through ROFR. When a member trades out for
DCL or other Disney Collection, they have to sell the lodging equivalent through Disney Reservation Center to pay for that Disney Collection reservation. So the availability you see on DRC, is the points owned by DVC (their required percentage, the points taken back by Disney and the points traded by member for the Disney Collection. Points on their own don't have any value outside of booking DVC reservations.