How did file-sharing services such as Napster challenge copyright law?

Napster challenged intellectual-property law by facilitating the large-scale, unauthorized distribution of copyrighted music over the Internet. Launched in 1999, the service utilized a centralized index server that allowed millions of users to search for and download MP3 files directly from the hard drives of other connected computers.123

This practice sparked a significant legal battle between the Recording Industry Association of America (RIAA) and Napster. The RIAA argued that the service enabled widespread copyright piracy by allowing users to create perfect digital copies of music without authorization, thereby bypassing traditional distribution methods like compact discs.341

In contrast, users defended the practice as fair use, arguing that individuals who had purchased music were entitled to share their files. Ultimately, the courts sided with the recording industry, leading to a 2001 injunction that shut down Napster’s servers. This case fundamentally reconstructed the relationship between producers, distributors, and consumers, prompting the industry to pursue digital rights management and eventually embrace commercial digital distribution platforms.134