This pushes home the idea that to have food you essentially need energy. If electricity were abundant enough it could even make sense to grow vegetables close to people in cities, perhaps in the same buildings.
It's almost all energy... food, electricity, clean water, a lot of recycling options, even hydrocarbons could be synthesized from atmospheric carbon if you have cheap enough energy. The only exception is atoms, and even for many of those, if energy was cheap enough, we can just go get some more of the desirable atoms, like the rare earths, from space. Civilization is ultimately all about the energy.