https://en.wikipedia.org/wiki/Unit_731
The US government granted many of the "scientists" immunity in exchange for giving over all the data they had learned and helped even cover it up lol
The Japanese did some real fucked up shit in these experiments like chopping off limbs and reattaching them to the opposite side and slicing open pregnant women.
They also flew low flying planes over Chinese cities and dropped Plague-infected fleas which killed tens of thousands of people.
In total, they killed hundreds of thousands of people.
One thing that might be done (in my clueless opinion) is accept that sometimes shit happens and preventing the victim from getting exaggerated revenge or damages or whatever.
I'm sure at least once it happened that people who actively requested experimental treatments turned around and sued or called for prosecution after their experimental treatment took a bad turn. Of course researchers will be reluctant to provide experimental treatments.
/s
Plus it is massively more expensive to let people continuously loop back into kidney failure.
More expensive and unethical.
On a large enough scale, we decide the rules that apply amongst us. How could it be unethical? Who's being unfair to us, martians? God?
We're being unfair to each other... seems fair that we get unfair treatment.