^You misunderstand. The basic material that this type of glass is made from is commonplace, but making it into useful glass with the desired properties still requires finding the right formula. Yes, it's stupid the way the media insists on calling it "transparent aluminum," but that doesn't mean there isn't some real cutting-edge materials science involved in the current research to develop alumina-based ceramics and glasses for new applications.
After all, regular glass is essentially made from sand, but that doesn't mean it's the same thing as sand. It takes skill and knowhow to transform the raw ingredients into the final product.