Don’t have to explain it. Soccer grass in a dome is temporary for World Cup to be able to host. Soccer stadiums are all open air with grass. I didn’t make up the claim about soccer vs football . It was in articles about that very thing. Football is more taxing than soccer.
temporary turf maintained by grow lights 100% indoors is just that. Temporary.
Chicago is planning a downtown dome… non retractable.
grow lights and indoor irrigation in a dome has to be less expensive than a rail and tray system requiring the same irrigation after the field is moved outside. Why? Perhaps sunshine is more efficient than a grow light system slowly moved over a field and back again over and over.
Chicago has no choice but to put in real grass if all things are equal.