Energy for grow lights alone would offset any profit.
But this kind of boondoggle would provide excellent ‘cover’ for criminals growing marijuana ... And I’m guessing it’ll morph into a ‘program’... for members of democrat victim groups ... and get city funding ... and it won’t work... discovered after millions and millions have been thrown down the rat hole... etc etc...
Grow lights are now LED, at a small fraction of electric use versus the old halogen/incadescent lights.
Aquaponics sets forth much larger yields.
I can discern a good profit.
The Israelis are doing it profitably-— even more profitably than field-agriculture, because of the very efficient use of water, and the elimination of waste, which otherwise typically accounts for 1/3 of the crop from field to consumer.