I have followed a few companies in this space over the years (I believe only one of which has survived), and a few in adjacent spaces, e.g. general urban farmin

I have followed a few companies in this space over the years (I believe only one of which has survived), and a few in adjacent spaces, e.g. general urban farming, not necessarily "vertical". My enthusiasm aside, and based on some of the same concerns raised in the last paragraphs, I have to be that guy and bring up Betteridge's Law of Headlines. EDIT: Even the company I thought had "survived" is in the process of an extreme pivot from their original focus: https://indoorharvest.com/ https://indoorharvest.com/ They used to repurpose HVAC equipment for some aspect of indoor farming, iirc.