[diggan]

> What about the vast majority of people who live in the suburbs or cities?

Suburban houses usually have a garden around them, you can grow vegetables and stuff in/on top of those. Plant some fruit trees/bushes as well and you have a start :)

Cities are more difficult, unless you have access to a balcony/patio/roof. I know in some local neighborhoods, neighbors have gotten together to create little co-cops, and took over small unused plots and grow some stuff together there. Plots like these for example: https://www.google.com/maps/place/Carrer+del+Doctor+Trueta,+...

Sure, none of these will make you 100% independent when it comes to what you eat, but small differences can add up and also spread the knowledge/ambition for more people to do it.