A lot of people seem to be misunderstanding the goals of vertical farming. It’s not to save space, we have more than enough of that. It’s to stop produce from being shipped hundreds of miles on trucks which greatly increases greenhouse emissions and results in less fresh produce.
Transportation is the biggest emitter of greenhouse gases in our food’s supply chain. When you hear about beef having such a big carbon footprint it’s also accounting for the massive footprint of transporting all that beef as well as it’s food. If you can cut that down you would be greatly reducing the carbon footprint of your food.