Five clubs exist solely for Parisians to discuss and rate chocolates. Since joining in 1973, Great Britain, Ireland, and Denmark have been allowed to use vegetable fats, too, which are cheaper than cocoa butter, as long they didn't sell the products in member nations. But recently, they and newer members have been pushing to sell their lower-grade chocolate throughout the EU, arguing their case in the European Parliament. This wouldn't force the French into making bad chocolate. You can have both, but they must have different names.
Chocolate is chocolate.
You put something else in and it isn't chocolate anymore. They're worried about identity and years of tradition. There are health concerns, too. You can eat 15 of my chocolates and feel fine. After 13 of his chocolates, however, I begin to doubt this claim.