To sibling commenters: immunotherapies aren't the only problem. There are a
ton of truly evil companies out there pushing therapies that do not work, have never worked, and will never work, because they
literally have no possible mechanism to ever do anything. This is a crime, but it's very very hard to prove.
And these companies get very good at gaming the system, because that is their product. They are mechanisms to commit fraud, stealing all their patients' money and all their families' hope. This is a very bad thing. And, no, I am not making any of this up, but I dare not name names here. These companies also tend to be litigious!
The impact of this is extremely severe. First, people die because they choose a truly worthless treatment that can never work, over bad ones that at least had a snowball's chance. Second, people lose faith in The System, because they think that the fraudulent treatments should have worked, so they lose faith in the good ones too. And third, R&D efforts can get redirected away: rare condition X already has a treatment, so let's put our efforts elsewhere (oh wait, no it doesn't, that was fraud, now there will never be a treatment).
We will not untangle the experimental treatments issue until we confront this problem. Just do not think that it is all in "good faith" here, or even "best effort": there is real fraud going on, committed by monsters that know exactly what they are doing to take their profit.