I don’t. Territorialism seems rather primitive and unsophisticated to me. What’s the point in borders if you don’t enforce them? Exactly. Real community is based upon relationships, not acquisition. Borders negotiated between people in their daily lives are more real than fighting over territory.
Public property is not for private use, it is for public use. But feeling a need to sort between “any yokel” and “not just any yokel” is the foundation of classism. In doing so, you undermine a significant aspect of democracy.
Because I don’t believe in property. I think it’s delusional. I find it more efficient to simply maintain a pool of resources which anyone can use, rather than each having separate and redundant sets of “private property”.