Ownership Of Land
Kashmir is a disputed territory, not in collective ownership of any society like Pakistan or India. Therefore, this principle cannot be applied to this situation. For reasoning how Ghamidi Sahab reached to this conclusion, his arguments and basis for his conclusion, please refer to the above shared links where Ghamidi Sahab has explained his point of view at length.
It should be in collective possession if it is taken collectively, like Ghamidi sir mentioned about that land. But once it is taken or purchased as individually, it should become personal property. Like Prophet Muhammad SAW purchased land from orphan boys for Masjid e Nabi. Even Prophet Muhammad SAW just became leader of Madina and he didn’t take land as collective property of Madina.