From the perspective of economies of scale and diseconomies of scale: For snack bars, expanding the scale will lead to diseconomies of scale and increase the average cost of products (LAC), so rational manufacturers will not continue to expand the scale.

From the demand point of view, the customers of flavored snacks are relatively small, and blindly expanding the supply may lead to unsalable food.

Moreover, this special snack is originally intended to avoid competition with the surrounding big catering companies, to occupy a niche market that cannot be occupied by big catering companies, and to survive in the cracks.