Only if that configuration continues to be profitable. It may later become more profitable to increase the box size, or like they mentioned in the article, to s

Only if that configuration continues to be profitable. It may later become more profitable to increase the box size, or like they mentioned in the article, to standardize box sizes. The costs of cereals vary widely, which leads to fragmentation, which leads to logistical and operational inefficiency. They may even prefer to take a loss on this cereal to increase size if it affords them efficiencies across their whole product line.