Vertical farms don't make sense, and never will, except as a curiosity/novelty/luxury product. There's only so many calories you can grow with the incident sun on a piece of ground.
So when at some point in future we manage to get cheap renewable replacements to fossil fuels, all of this becomes very relevant.
If you rely on cheap energy, then yes. If you grow under the sun, vertical systems and hydro-/aeroponics still make a lot of sense, IMO.
Check what these guys are growing under the sun in grow towers:
I think this would be impossible to reproduce with traditional horizontal farming.