Napster was designed explicitly to enable copyright infringement. Cloud storage is not. A more valid comparison would have to involve the Supreme Court's ruli

Napster was designed explicitly to enable copyright infringement. Cloud storage is not. A more valid comparison would have to involve the Supreme Court's ruling on VCRs, which could possibly be used for copyright infringement, but had substantial uses that were perfectly legal. >The Court's 5–4 ruling to reverse the Ninth Circuit in favor of Sony hinged on the possibility that the technology in question had significant non-infringing uses, and that the plaintiffs were unable to prove otherwise. https://en.wikipedia.org/wiki/Sony_Corp._of_America_v._Universal_City_Studios,_Inc.#Majority_opinion https://en.wikipedia.org/wiki/Sony_Corp._of_America_v._Unive...