It doesn't save lives, it just allows more breeding. As long as the population is growing, we are in a food surplus. More expensive food would just result in pe

It doesn't save lives, it just allows more breeding. As long as the population is growing, we are in a food surplus. More expensive food would just result in people having ~2 kids instead of 3, and the excess famine would resolve itself quickly and return to equilibrium. Likewise, if all food suddenly became half as expensive today, the only thing that would happen is that people would have more children until the food is back to "saving lives".