There are two different issues at play here, one the way food is produced and distributed and two the way fiat erodes capital and concentrates it. In my opinion people going hungry aren't a victim of not enough fertile ground or workable land but moreso the erosion of their capital due to fiat systems. This is and example of how inflation is exported too the poorest in the world. It's possible that these people should have moved if in fact they could no longer grow enough food to feed themselves but instead they stayed being proped up by fiat subsidies. Definitely a complex issue to think about. In my opinion, fiat is the biggest problem we face, all the solutions are available but the incentive to utilize them isn't.