Less suitable than empty air 10 feet above the ground?
How is vertical farming powered by solar panels better than building the same artificial growing environment at ground-level and powering it with sunlight?
Because you can put the solar panels above a parking lot. You can't directly compare land area for growing with land area for solar panels, qualitatively, they are two very different lands. We have more of the latter.
How is vertical farming powered by solar panels better than building the same artificial growing environment at ground-level and powering it with sunlight?