they need to have a product that is of commercial use.
currently they have a demonstration unit roughly one foot square with significant side elements (2-3 inches wide).
Lots of talk about automating the production in the glass rolling phase but until they can get the charge form the center of the pane to the edge running over say 10' they will not have a commercial product.
Laws of physics are not on their side but who knows what non- technology can do.