It's unclear to me why paying individuals with very rare blood types for the blood they provide to the medical industry would in any way alter the landscape of

It's unclear to me why paying individuals with very rare blood types for the blood they provide to the medical industry would in any way alter the landscape of general blood donations. I understand why it's a bad idea to attempt to pay for regular blood donations in general, but rare blood is not a "regular donation" - the individual is in possession of an insanely lucrative product. It just happens to be their blood, instead of something more "normal" like artistic talent.