We have not seen the aftermath yet for Ida, but I also lived through Katrina, where we had flooding and had to rebuild the ground floor of the house. About two weeks after the insurance adjusters sent their novices into Hell on Earth, dealing with already frustrated home-owners with nothing left except a framework, checks started arriving. Can't speak to all of the chains, but Lowe's provided the materials for our house once we had a crew. My wife would go to Lowe's to pay for the pile of stuff the crew boss would select (when he could). In conversation, we learned that once the roads were opened, they would get 18 semi trucks arriving just after midnight and a special night crew would do the midnight to 8 AM shift unloading. By about 8 PM, the store would be empty again, and that lasted for a couple of months.
This time, it might get worse because COVID has shut down many factories due to lack of workers. Also, I don't recall that Katrina morphed into quite the rainmaker that Ida did. This morning on my "Weather Channel" app on the cell, I see that Ida merged with a front and dropped flooding rains in Philadelphia, northern New Jersey, parts of New York (including flooding the subways), and the witch even spawned tornadoes. Not only will the early part of Ida's path be in rebuilding mode, but the more heavily populated northeast populations centers will need materials too, just as there is a series of forest fires in western states that often produce lumber. If you thought the country was divided before, just wait. I can see riots breaking out already over gas lines here, and with the damage in the northeast, I think more chaos will ensue.