There is still low-hanging fruit in bringing gifted children online. A small percentage of kids in developing nations are potential high achievers, autodidacts and could be given access to all the world’s knowledge at reasonable costs.
If you think malaria nets aren’t leveraged enough to beat kidney donations, other interventions might be.
Legalizing voluntary organ markets could be most effective, since it would both make the poor richer and solve the kidney shortage. But perhaps politics is too hard to change.
Instead of asking for self-sacrifice, why not allow poor people to sell their kidneys? There should be enough willing donors if compensation is high enough. Especially the affluent recipients should be able to leverage their wealth this way. In return, the global poor would have another income option.
Is this banned? If yes, then that means the current kidney shortage is a form of artificial scarcity.