"Open up the market"?? Maybe you're thinking of Cortez?
You obviously aren't that familiar with the subject since Jarritos is the only soft drink in that list (the others are snack brands). I feel there's an undercurrent of paternalistic racism in this thread - "those noble naive Mexicans would be so healthy if they only hadn't been enslaved to imperialist American fast food corporations!"
Mexico is a whole country full of educated, modern, free-thinking individuals with their own strong, vibrant culture. They're incredibly proud of it. They have their own tastes and their own products serving those tastes and yes, they struggle with dietary health just like everyone else in the world. Walk up to a native Mexican sometime and tell them that they only like pan dulce because Americans have brainwashed them, see how well that goes over.