Nah really just the US has the giant value bags of Hershey's product with almost no cacao solids. The commonwealth western nations are still sweet but have higher minimums.
Don't believe me? A good benchmark is kitkat bars. Try the regular from US, Canada, England, and Japan. Only the US one tastes overwhelmingly of sugar and not chocolate. Japan's chocolate is far less sweet but they don't seem to emphasize solids as much as UK does.
Given that sugar is addictive and most producers seem to have the attitude that the more sugar you sneak into the product, the cheaper it is and the more it sells, maybe Nestle (Kitkat's producer, right?) tests for regional tolerance and puts in the maximum amount of sugar, where the person still doesn't feel an overwhelming sugar shock when tasting? Just speculation, but it's a possibility I'd investigate if I were an evil food industry mogul.
As for myself, I just hate how shop-made cakes are mostly sugar - it feels like my mouth is burning. I don't understand why they do it. Nearly everyone I know prefer home-made cakes (made from basic ingrediants, not mix bags).
Since we're trading anecdotes, I was told that in Egypt people drink sugar drinks, like Cocacola, like you would drink alcohol in the West. Islam forbids drinking alcohol, so they use the next most boring drug: sugar. The picture that was painted for me was a group of grown men sitting around a cafe-bar drinking Cocacola.
> you may find that what is sold as chocolate actually has no cacao in it
In the western world, most people seem to want little to no cacao but sugar instead.