Exactly. Nobody was buying US wine, even the experienced winos and wine distributors for fancy dining that i've met here in Italy probably have never drunk US wine. Maybe new zeland, australia, south america, but i've never heard of somebody drinking an US wine.
And they weren't boycotting it, it's just not a good enough deal to buy from our prospective, even when people are looking to spend good money, there is better stuff to buy from elsewhere.