Maple Wine, not Maple Mead. I find recipes here and there,
now and then. But success stories I have yet to hear or
read and I've yet to find a commercial Maple Wine. Is
anyone aware of one?

I have spoken with (not just e-mailed) six maple producers
over the last 4 weeks. None have tried to brew it (Maple
Beer: Yes; Maple Wine: No) and none have ever seen it
commercially.

Anyone have a clue as to what is the problem?

Dick