It wasn't Soros who drove that particular shift - Jethro Tull
has rather more responsibility. Before him, you needed to have roughly 50% of the population living in the country to grow enough food to feed the oth er 50%.
These days, in advanced industrial countries, about 1% of the population ca n grow enough food to feed the other 99%. Australia's rural population peak ed in 1890. In France and Germany it has taken a generation or two to get t he redundant peasants of the land and into cities where they can be usefull y employed.
If the elite had felt that it made more sense to kill them off, that would have already happened, but the elite seems content with sub-replacement fer tility.
There may be some kind of consciousness of the lesson of the Black Death ba ck around 1350, when the dying off of 30% of the population vastly improved the bargaining position of the peasants vis-a-vis the elite, but Julian Ba rnes wouldn't know about that - he doesn't know much, and most of what he t hinks he knows is comically incorrect, as in this example.