Yes someone is making a profit from this, potentially adding incentive for the airport to confiscate and find more items to sell but this is most likely minimal and is also the case with every institution that exists in a monetary system that intends to make profit. It is not soulless to buy these items, it is simply logical for the buyer and is in fact much more resourceful considering business and profit is built upon selling as much product (using as many resources) as possible and so buying new items from shops would only add demand from the shop and so the supplier and so from the factory and so from our mother earth.