The vending machine is physically located in a Jewish-owned business. A non-Jewish vendor owns the physical machine and is responsible for stocking the chametz cookies in the machine. The vendor comes once per week, and empties the money, and restocks the machine with products that he owns. Every month, he gives the Jewish owner a percentage of the sales. The vendor also pays the Jew a space rental fee for allowing him to keep the vending machine there.
My question - Can a Jewish employee purchase chametz from this machine after Pesach? Is the Jewish business owner considered owning chametz during Pesach by the fact that he gets a percentage of sales, in general, or is the fact that the currently purchased product not having ben sold during Pesach exempt from this prohibition? Also, is the usage fee an implication of the Jew owning the machine and its contents?