1. Buyers are not sausage experts. Consumers do not trust manufacturers, retailers, modern GOSTs (state standards) and product compositions.
2. The main criteria when choosing is quality and taste. At the same time, no one can evaluate these indicators competently, so they start choosing based on other parameters (packaging, "it's just talked about", advice from friends).
3. New packaging is not a news trigger by itself. The buyer does not rush to the store just because the brand has new packaging. It is rather, on the contrary, someone may not find what they are used to and pass by.