When I was a kid I lived close to a large vegetable growing operation. They had two greenhouses, one was ~600k sq feet, the other ~500k sq feet.
I on the other hand had about a dozen or so pots on the windowsill, growing basil and whatnot.
Which dozen pots on the windowsill, as I am sure an astute observer such as yourself has caught on, ARE SO VERY MUCH MORE.
Wow, what planet are you from, again? :-)
-p