If this was more of a cyberpunk world and not a system of nations at the brink of over kill and total war over and over again, there might be a fleet of off road trucks from e.g. old military or modded used northern hemisphere trucks with little tiny houses travelling through the remote and poor areas of the southern hemisphere giving nomads a new way of live.
They might travel on their own or in packs and the trucks would carry beside the owner and his family a supermarket or workshop from village to village with quite flexible opening hours buying and selling all a northern supermarket would have from food, to caned food, to clothes, to electronics, to tools and toys and the constant need of refilling the mobile stock would be done by a mix of supply hubs, supply trucks and even glider planes depending on the pay load and weight of the goods.
Instead we have to prepare for war and an even worse crisis. So be it.
