Sometimes the next best thing is not exactly “next.” In the agribusiness industry, we’re always watching for emerging fields and opportunity to get in on something new. But in at least one area, “vertical farming,” enthusiasts may have gotten ahead of themselves. The industry – using robotics and controlled environments to produce leafy greens (and to a lesser degree other crops)– is learning a hard lesson: Not only do they need to produce greens, they need to make greenbacks....