As has been pointed out, this does happen. But consider the ethical minefield. It would be very easy for an unethical or poorly governed organisation to fleece

As has been pointed out, this does happen. But consider the ethical minefield. It would be very easy for an unethical or poorly governed organisation to fleece these patients. Willingness to try anything no matter the expense, plus slim chance of success, is a terrible equation. Even with stringent controls in place, there are plenty of examples where med/research companies skirt extremely close to the limits of ethical or exploitative behaviour. "Might as well try it though"? Well, how about horrible side effects, a life that's longer but more painful and increasingly less dignified? Your last few months in a hospital far from family, vs your last weeks at home? These are not straightforward issues. Finally, consider that some terminally ill people simply don't want any more treatment. They're done with it all, and that's fine. This is a limiting factor in recruitment for trials for such situations. I'm not denying your suggestion -- although these are conscious people with volition, which perhaps doesn't come across in your question. I'm just pointing out that ethics are very, very hard.