You mean in terms of governance, or the physical presence itself? For the presence, there are precedents. For example where small communities in e.g. Alaska get

You mean in terms of governance, or the physical presence itself? For the presence, there are precedents. For example where small communities in e.g. Alaska get government assistance to move and merge into other communities nearby. However those approaches seem to be taken very rarely, and you can imagine the attitudes of those residents who hold out.