Who is being taken advantage of in this scenario? The blood donors get money, and they only have to donate a little bit of blood each, so they aren't jeopardizi

Who is being taken advantage of in this scenario? The blood donors get money, and they only have to donate a little bit of blood each, so they aren't jeopardizing their own health. The billionaire potentially gets to live longer. The terms of the transaction are very transparent to both parties. Blood donation is an easy way to make some money. People do it all the time when donating to blood banks. It's not just people lacking money who do it.