The worst thing that can happen on the Raft is for your neighborhood to get cut loose. That's why the Raft is such a tangled mess. Each neighborhood is afraid that the neighboring 'hoods are going to gang up on them, cut them loose, leave them to starve in the middle of the Pacific. So they are constantly finding new ways to tie themselves into each other, running cables over, under, and around their neighbors, tying into more far-flung 'hoods, or preferably into one of the Core ships.