Gravity is definitely the biggest obstacle to growing vertically, it takes a lot of capital to overcome gravity. I'm on a small farm with some buildings but I

Gravity is definitely the biggest obstacle to growing vertically, it takes a lot of capital to overcome gravity. I'm on a small farm with some buildings but I have no desire to grow indoors, there is an abundance of soil and light outdoors, my customers buy the type of food grown outdoors, the environmental impact is probably always going to be less, and vertical growing is only suited for a small amount crops. We can't feed people from vertical farms because they do not grow the types of food people eat the majority of, mostly cereal grains. Tomatoes, potatoes and larger vegetables are not viable so we're limited to salad greens, herbs, wheat grass ect.