Today, Champagne is synonymous with all kinds of sparkling wine. Most people do not know that it comes from a certain region of France. It has become a vocabulary word of the English language, not just a brand name of a certain company. The French can't own a word of our language.
Should hamburgers only be made in Hamburg? Champagne received its name from a region in France, but individual makers from around the world should be able to product high quality products no matter where they are. A region cannot claim the ability to product an item over all other regions.