It boggles my mind how little people are aware of this kind of practice. The Who even wrote a “joke” song about it in the 70s:
Well, I farmed for a year and grew a crop of corn
That stretched as far as the eye can see
That’s a whole lot of cornflakes
Near enough to feed New York till 1973
Cultivation is my station and the nation
Buys my corn from me immediately
And holding sixty thousand bucks, I watch as dumper trucks
Tip New York’s corn flakes in the sea
~~
Well, my pick and spade are rusty
Because I’m paid on trust
To leave my square of cornfield bare