Because humans are mobile, the community changes as people, institutions, infrastructure, and industries come and go over time.
Even if a substantial fraction of the population never leaves the geographic boundaries that contain the community they were born in, their web of relationships constantly changes as old neighbors leave and new neighbors arrive, the prevailing economy improves or worsens, and waves of technological revolution like the transition from horse-drawn carriages to automobiles washes over them.
Furthermore the community in which we live is only one of many communities we inhabit, such as school chums, work colleagues, church congregations and political movements, all of which are subject to the same phenomenon of perpetual change.
If every aspect of the community is impermanent, the community itself cannot be permanent, and I see no argument, let alone any technology other than encasing the community in lucite, capable of preserving it indefinitely.