I don't know. Maybe eventually the state will allow them passage over the perfectly usable roads without fear of being denied safe return to their homes. Maybe they will start small and rebuild naturally. Maybe they won't feel constrained to honor someone's timetable or demands that the city be rebuilt as it was. Maybe they just want to set up their own little neighborhood as a town for now, building businesses and new homes as needed.
Maybe we should get out of the way and let them answer your question by demonstration.
As Mr. O'Dwyer said in that video linked in 94, all he wants is "benign neglect" -- I have a feeling he and others like him can take care of business just fine.