That's a really good point in the argument that markets for demand-inelastic goods are amoral at best and unethical at worst. We have choices to make when it comes to which economic systems best solve certain problems.
Organ donation is a good example we're we've said, "we cannot let a market solve this problem." Are there issues, with it? Sure, but only the extreme among us argue that organ markets would be an improvement. Every market is open to this critique to various degrees.
It's like Insulin. It may only be worth $5/vial to drug companies, but it's worth $100/vial to consumers who don't want to die.