Top 10 in Canada, so why a flop elsewhere?

Coffee Crisp box, Shopper's Drug Mart, Vancouver, BC

Advertisement for Coffee Crisp McFlurry, McDonald's, Vancouver, B

Coffee Crisp is one of the most popular chocolate bars in Canada, at least according to this box that I saw on the shelf at a Shoppers Drug Mart location.

Despite the fact that Coffee Crisp is one of the most popular coffee bars among Canadians, attempts to introduce the bar to the US market have not succeeded. The most recent attempt resulted in Nestle selling Coffee Crisp in a number of US markets between 2006 and 2009.

Yes, despite the similarities between the US and Canadian markets, there are many Canadian products that unable to develop much of a presence in US markets.

US consumers seem almost as enamoured of coffee as Canadians. (Canada 1.009 cups per day per person, USA 0.931 cups per day per capita.) I wonder why they are not interested in a coffee-flavoured chocolate bar?