Among the iconic, long-standing TV programs that Americans tune in to, one factor can be vital to their longevity: evolution. In “The Simpsons,” Lisa goes from always wanting a pony as a pet to being a vegetarian and a mini-activist, whereas Walter White went from being a desperate chemistry teacher to a drug lord in “Breaking Bad.” To keep audiences engaged, TV shows evolve their characters, even though the updated characters may starkly contrast with their original versions. The consumer packaged goods (CPG) market also has undergone an evolution, and PepsiCo Americas Beverages (PAB), a division of Purchase, N.Y.-based PepsiCo Inc., is making sure it is at the forefront of this evolving market.