I too am surprised to learn that apparently, there are many hogsheads of organic prosecco laying around just in case someone needs them. (On another note, I tried another organic prosecco last night, Ziobaffa DOC, To my admittedly untrained palate, it tasted neither better nor worse than Bellissima Brut and was priced at $11.99. Might be worth a try if you come across it.)
So how many vineyards do you think it takes? I know with Tequila we use one farm. So they should be with a vineyard that can handle current grown needs. Now will they out grow it sure but not yet.