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I agree with all your points. However, I believe there are additional costs to land farming like insects, weather damage, etc. So, yes, the sun is free but that comes with the caveats of the elements. Not sure how much crop is lost due to insects/drought/other factors but perhaps this helps.

Commercial farms generally have some form of Crop insurance along with equipment insurance etc.

I don't think very small one man farms that sell directly at farmers markets are eligible for most of the programs. But most of those people grow in residential areas not properly zoned for agriculture.

Vertical could be interesting to try in those micro backyard farms.


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