like most things, its all down to marketing.
i spent a decade in France, there are much better wines to be had for so much less money. i know for a fact that the biggest selling french wines in other countries don't really exist where it comes from. Moet does, but its hardly the bee's knees (probably too anglophiled for the locals...)
ps; Brookfield; a Brit opened a Prince of Wales pub in the suburbs of Paris when i was there, great fun. Photo's of the royal family etc, was a hoot! great place for rugby, sunday roast etc