Here is a little bit of info on the issues of distributing Pepsi/Coke. It involved an anti-trust lawsuit against Coke by Pepsi in the 90's. Essentially, Coke was forcing the fountain distributors to carry only Coke products, or else they would pull all products from the distributor.
http://www.beverage-digest.com/editorial/980508s.html
PepsiCo owns 3 major restaurant chains in America - Taco Bell, KFC and Pizza Hut.
Here is a little more info. The perks are pretty interesting with the contracts. I have a few friends that work in acquisitions and the like for a bigger-ish regional chain. They told me the costs of offering both, after all the benefits were yanked away, would be tens of thousands of dollars per restaurant.
http://xatal.com/miscellaneous/why-arent-coke-and-pepsi-sold-together-at-restaurants/
The comments are interesting about the perks. Soda pop is a massive money-maker for businesses, as a $1.99 cup of the stuff costs, at wholesale, a few cents. If one of the companies yanks away your perks (free machines, Co2 refills, increased cost for the base syrup, ect), that could explode and your biggest money maker could bankrupt the business.
Back from the dead, I'm afraid.
