By Jason Feulner, Finger Lakes Correspondent The question in the title is not flippant: the ever-frustrating 89-point score is a non-starter in terms of soliciting national interest in a given wine. If Wine Spectator graciously grants a 90-point rating, the wine flies off the shelf. An 89, despite its proximity to 90, results in mediocre interest at best. The problem is even more vexing for wines from lesser-known regions. An 89 for a well-known California producer will not deter loyal consumers en masse, but the same score for a New York, Michigan or Virginia winery means that the millions of…