Could be--but still VERY interesting technology. Reasonably good efficiency, and the fabrication technology certainly "should" be less expensive than crystalline or amorphous silicon, and the non-silicon "thin-film" cells.
As I understand it, they are in the "production engineering" phase at this point.
$5 per watt seems to have been the industry standard for a couple of decades. That's just the solar cells. All this new technology parades past and the price remain $5 a watt. They used to talk about 10 cents a watt and trash like that, but now they just talk installed systems. Preferably on municipal buildings.