This is spot on Tomas. We have been vertical farming since 2015 for our own consumption and for friends, family and others who want "clean greens". We started with a kit greenhouse from Home Depot and vertical towers from ZipGrow,

much instruction from Upstart University on-line, basic knowledge of chemistry and voila. Anyone can do this with a small investment and motivation to keep learning. Large scale is a must for our future. But back yard gardening using hydroponics will help too. And it produces the most beautiful greens and veggies.