Normally people deal with this naturally by having fewer children when supplies for basic goods like this are constrained so the population and prices would ser

Normally people deal with this naturally by having fewer children when supplies for basic goods like this are constrained so the population and prices would servo around an equilibrium. High rates of migration upset this equilibrium. In the past it would normally cause wars and genocide because of that. I'm not convinced the current world is any different but a number of other people seem to be.