Does the Quality of Store Brands Affect the Number of National Brand Suppliers?

This paper examines how the increased market shares of the store brands affect the entry and survival of national brand suppliers. The analysis is performed on monthly scanner data for a number of household- and personal-care products covering June 2001 through May 2004. An increased market share of medium-priced store brands was found to decrease the number of suppliers of national brands. However, no statistically significant impact was found of low-priced store brand market shares on the numer of national brand suppliers. It thus seems that it is mainly medium-priced store brands that compete with national brands.