Who buys Coke only twice per year?
People who never drink soda...except that one time at a restaurant on a holiday, where your sanitary considerations make you ask the waiter for a beverage you know, that beverage being coke or pepsi. I will go for the coke, even though I can't taste the difference in a blind test.
The following is a very interesting read: http://www.ft.com/cms/s/2/cd1722ba-8333-11e5-8e80-1574112844...