[imtringued]

>Vertical indoor farming is far more sustainable than outdoors farming.

It's not. "Vertical indoor farming" is heavily biomass constrained and this won't change even with infinite energy.

Have you ever paid attention to the types of crops grown in vertical farms? "Leafy greens" is a phrase that is used almost exclusively in the context of vertical farms and nowhere else. Most people talk about the specific vegetables they've had in their salad, not a broad category of vegetables that can be used for salads.

"Leafy greens" are "interesting", because they have an incredibly high water content, meaning less biomass is needed to produce the same volume of produce and they tend to have small root networks, which means that most of the biomass is edible and can be sold. They also tend to be small in the vertical direction, which allows more vertical stacking.