I do not see any evidence of that, and I would see many reasons for the opposite: a worldwide trading network for food production would reduce the impact of price swings, and would provide the best insurance against local disruptions (ex: tsunami, draught...)
I’d suggest looking around a bit… this stuff isn’t exactly a secret.
There was alot of very insightful writing during the New Deal era, where federal price supports were introduced. Later, in the late 60s/early 70s, stabilizing prices was a policy position taken to blunt the wartime inflation from Vietnam and the Cold War.
That’s not to say there aren’t any downsides. The destruction of Mexican corn agriculture post NAFTA is an example. The world could drown in the bounty of cheap American corn.
