One of the nice things about gift cards is their atomic portability. I don't see that here. If someone gives me a starbucks card I can re-gift it to a homeless

One of the nice things about gift cards is their atomic portability. I don't see that here. If someone gives me a starbucks card I can re-gift it to a homeless guy on the street. Also how would "any business" work if that business has no physical location?