Our societies are essentially distributed. You can install the furnace you want, without central planning. A consequence of that is that there's no central data

Our societies are essentially distributed. You can install the furnace you want, without central planning. A consequence of that is that there's no central database. For example: A lot of dairies use gas furnaces to provide the heat for pasteurising milk (and much else). Each of those companies decided individually what kind of furnace to get, and each of them individually now has to plan for the winter. The dairy farmers can ask their dairy, and try to find another if the dairy says it may not/won't be able to take their milk this winter. There's no central database that covers spare capacity, whether of transport to the dairy, the various processes to transform the raw milk to saleable products, bottling or distribution.