Why was Napster sued?

Napster was sued primarily for copyright infringement due to its peer-to-peer file-sharing platform that allowed users to illegally share and download music without permission from copyright holders. The Recording Industry Association of America (RIAA) and several major record labels filed lawsuits against Napster, arguing that it facilitated widespread piracy and undermined their ability to control and profit from their music. The legal battles ultimately led to Napster's shutdown in 2001, highlighting the challenges of balancing technology and intellectual property rights in the music industry.