In December 2020, Germany implemented a policy restricting online pharmacies from offering rebates on prescription drugs to members of the statutory health insurance. This policy change created a natural experiment, allowing us to analyze its impact on the pharmaceutical market using...

We show that MRPM can increase manufacturer profits and total output even in the absence of traditional justifications based on point-of-sale services, retailer effort, or free-riding. The key insight is that MRPM mitigates channel conflict by altering how retailers balance extracting surplus...