This is absolutely true in the USA. Frito Lay has done this for years, paying supermarkets for more and more shelf space, while the smaller, regional competitor

This is absolutely true in the USA. Frito Lay has done this for years, paying supermarkets for more and more shelf space, while the smaller, regional competitors were left with less and less room to sell. This happened to my father in the 1980s when he owned a distributorship for a regional potato chip company here in the Midwest United States.