Cal. Bus. & Prof. Code § 25503.24
(a) Notwithstanding any other provision of this chapter, any manufacturer, winegrower, rectifier, distiller, distilled spirits wholesaler, or any officer, director, agent, or representative of any of those entities, may conduct market research and, in connection with that research, the entity conducting the market research may purchase from licensed off-sale retailers data regarding purchases and sales of alcoholic beverage products at the market rates that those retailers sell similar data for nonalcoholic beverage products subject to the following limitations: