For high-value produce it probably is. More and more people are becoming aware of the dangers of all the chemicals (and often GMOs that are required to even en

For high-value produce it probably is. More and more people are becoming aware of the dangers of all the chemicals (and often GMOs that are required to even endure all those chemicals) and the organic food movement is accelerating more or less exponentially. The only way to really grow a lot of food organically is indoors where you can carefully control the environment, and sterilize the whole system periodically as necessary. I cannot imagine staples like wheat or rice would ever make sense to grow this way, but I could certainly see smaller beer and (say) sake breweries grow their own, as well as small-scale bakeries and even Italian restaurants and the like. Long ago I had the idea of using cheap plastic or glass fiber optic cables to simply bring sunlight inside buildings, for plants as well as indoor tanning and to reduce depression for people living underground or whatever. I think a system could be easily designed to bring sunlight in directly instead of first making electricity and then powering batteries. Of course some electricity for pumps and fans will be needed but much less overall would be required this way. By adding edible, herbivorous water animals to the system somehow, such as carp, snails, loaches, etc. you could reduce fertilizer needs while also utilizing leaves, roots, and so forth more effectively. The fecal matter from these animals would of course help fertilize, and also create CO2. Speaking of CO2, well, the world seems to have a lot of that these days, so naturally that can be piped in from a nearby factory or power plant or whathaveyou to massively increase the speed of plant growth (also would possibly help with heating in the winter...) As far as protein goes, Spirulina is super efficient to grow, as is hempseed. Perhaps friendly insects or earthworms could also be involved, to add to the freshwater animals already mentioned. A really well-thought-out system could really supply a lot of nutritious fresh food for a lot of people. And I think a lot of people would buy beer from a company that grew organic wheat and hops right in their brewery too..people will pay a lot for the peace of mind and better taste coming from organic ingredients.