And who is going to pay for all that?
I am not suggesting that everyone or even a small percentage of the population is interested in doing this but it isn't even close to impossible, which is what you said. Now you are shifting the topic.
1. Convert your land to permaculture practices - lots of work
2. Start growing your own food, collecting water...
3. Convert your grocery budget from stores to seeds and supplies
4. over time switch to homegrown food
5. Increase crops with that budget
6. In about 3-5 years you will have rich soil, seeds and year round crops to feed many people
All of this can be done with no ADDITIONAL budget from what you are currently spending on your food. Probably would be eating about 75% of your own food and 25% from stores. If everyone did this there would be an abundance of healthy food. As a society we previously grew our own food, shared, bartered and helped each other. Now that is some sort of crazy idea. I get that it is extreme and nobody wants to go away from industrialized food but it isn't impossible.