alt Hacker NewsFarms - with a near infinitesimal number of farmers compared to the numbers living in cities .. exactly as things are trending now.
It's common enough, here at least, to have a small family cropping 13,000 old school acres - tilling, seeding, waiting, harvesting, etc with big machines and Ag-bots.
So not really "fairly untouched", then.
You're going to need more farms and more farmers, and no-one can afford to be shipping food halfway round the planet.