摘要：Growing concentration in the retail grocery sector raises new economic questions that are difficult to answer with existing data sources. In part because of concentration in the retail data industry as well the fact that these data are not primarily collected for academic research purposes, currently available grocery-level datasets are extremely expensive, not properly randomized, and lack critical information. We discuss the increase in concentration at the retail level, concentration in data provision, data needs for a number of important research areas, and possible solutions.
