Jon Brodkin, writing at Ars Technica:
The music industry is suing Charter Communications, claiming that the cable Internet provider profits from music piracy by failing to terminate the accounts of subscribers who illegally download copyrighted songs. The lawsuit also complains that Charter helps its subscribers pirate music by selling packages with higher Internet speeds.
While the act of providing higher Internet speeds clearly isn’t a violation of any law, ISPs can be held liable for their users’ copyright infringement if the ISPs repeatedly fail to disconnect repeat infringers.