I very much doubt that is the reason. There may be 10 times or 100 times more Norton grapes grown than Cab Franc in Missouri. If it was such a poor product there wouldn't be any market and they wouldn't be grown at all on a commercial basis. I guess that is why there are a glut of Cabernet Sauvignon, Merlot, Chardonnay, Pinot, etc glut on the market right now. They are inferior grapes? It's a crap grape market right now. There is much discussion in the industry and hobby about this right now. You are a commercial grower. I am sure you know this.There are 60 tons of Norton on the open market for sale in and around Missouri. There are 0 tons of Cab Franc on the market for sale. If Norton was so good of wine, then there would not be a glut. Go figure.