I read this article with great interest. I live in a rich industrial country in the middle of Europe. About 2% of the population works in agriculture. The rest of the population makes a living in industry or commerce. So far, we have imported what we needed.
But there is now a war between Ukraine and Russia. The market for oil, gas and agricultural commodities is collapsing.
It is quite possible that, out of necessity, we will start establishing city gardens ...