What was the four-firm concentration ratio in the u. s. soda market in 2009?

the four-firm concentration ratio in the u. s. soda market in 2009 are as follows Coca cola - 42.7% Pepsi - 30.8% Dr. pepper snapple group - 15.3 % Royal crown - 2.1 % From the above data we can clearly find that Coke has an uphill battleâ€"they have huge amounts of marketing muscle, financial resources. Against Coke and Pepsi, guerrilla warfare is the only thing that might work.