Have you read the entire article from The Economist or did you stop when you got to this paragraph? I'll assume you stopped at the end of the paragraph.
The article is about the value (to it's shareholders) of PepsiCo remaining as one company and not dividing into two (one a drinks manufacturer and the other a snacks manufacturer).
According to the boss of the company, PepsiCo's dominance, power and influence with its suppliers, retailers and customers is due to its being one entity, not one company of two divisions.
Is it clearer for you now?
Student or Learner