Ah yes, there’s always “something coming”.
In 1905 about 350,000 horses were required to haul in food from the NYC suburbs and feed a city of a little over 1 million. That’s when there WERE farms within 25 miles.
There are none now. There won’t be any because farms don’t generate revenue from land like rental income can.
And vegetables don’t provide 2000 calories / day btw, required for life.
hard working amish probably need 4000-5000 calories a day.
I sit in front a computer all day and then work out for half an hour to keep from turning to pudding. I don’t think I need more than 1500 calories a day.
here’s a couple of vertical farms in the nyc area.
http://weburbanist.com/2016/06/05/worlds-biggest-indoor-vertical-farm-near-nyc-to-use-95-less-water/
http://boweryfarming.com/press
https://www.nytimes.com/video/nyregion/100000005080478/aerofarm-vertical-newark.html