I think it's probably the same thing as with French wine. First of all, centuries of savoir faire have impacted on the quality of the stuff. Then the climate which is , in both example, absolutely ideal for both.

Having said that I guess both Wines and Cigars (had to put a capital letter on those two God given marvels.... ) will have the same challenge to face namely countries catching up in making very VERY decent products. France may not hold the flag of exceptional wine making much longer just like Cuba may not for cigars.

Still, I'll have a glass of fine Bordeaux and a Cohiba over an Australian Shiraz and Jamaican any day!