Everything is usually in a centralized database of orders that are tagged with the point of sale location and the store, warehouse, or vendor that the product came from.
Warehouses and retail stores also have inventory databases that tell them how quickly something sells, when they need to buy new supply, and where that supply needs to go.
It kind of doesn’t matter where the sale comes from as long as you know where inventory is and is not needed.
I could go for some of that Scandinavian democratic socialism though. Tax the rich and pay for social services that create smooth roads and fewer people looting drug stores to buy fentanyl.
Asian Old Man is an investment. You buy him, put him up, then work extra hard to climb the latter so you don’t disappoint him. The you’ll have enough money for even more wall decals.