Weber doesn't want anyone to know the maker, and I'm sure the maker had to sign an agreement to not divulge its name. It's very possible that it is not being sold under any other brand name, as per the agreement.
With all of the interest in bringing it back, the maker could probably ditch the more expensive plastic bags, paper bag it, sell it for less, and make a killing. But Weber has its brand to protect.
We need a defector from the plant that made it.