Larry Niven’s “Arm” stories to place in a world where executions were common to feed the organ banks. In one story, the policeman was investigating a 20-something heir that went missing for a while and his sister was brain damaged beyond a coma state. They were trying to figure out what happened, as well as reasons why.
One bad guy did a brain transplant into the kid’s body, taking over his life, but brain wiped the sister so she wouldn’t notice. (No other family to see the change.) The thought of doing a brain transplant hadn’t occurred to anyone because of the value of a dead body as a donor - it could save or extend a dozen lives or more, so no one even considered it.
In this case, you don’t just lose out on the organ donations with the brain transplant, but the odds of success are essentially zero.
If it ever becomes viable Niven predicted that the death penalty would soon be enacted for things like jay walking and fender benders, right? It would be old rich people getting body parts from young criminals to extend life. Pretty gruesome. If I remember that was part of the impetus for some of humanity to actually leave earth and start living in space, it’s been a while since I read those.
Freegards