In that vein, merely selling a tool even if a predominant use or intention of that tool is infringement, the infringement must be actively induced or invited by the seller. This is also affirmed in detail in the USSC opinion: "The Court has repeatedly made clear—see Kalem Co. v. Harper Brothers, 222 U. S. 55, Sony, and Grokster—that mere knowledge that a service will be used to infringe is insufficient to establish the required intent to infringe."

This is the primary part of the opinion, the first 7 of 27 pages. I'm still reading the rest and will update when finished. (Concurring Opinion and Dissents I believe)

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The meat of the opinion has some interesting elements as well:

* "Internet service providers, such as Cox, have limited knowledge about how their Internet services are used and who uses them. They do know which IP address corresponds to which subscriber’s account, but they cannot distinguish one individual user from another...However, because online infringement is so widespread, pursuing each individual infringer does little to stem the tide.": mere IP logs are not enough to establish liability, perhaps. More importantly, it is opined that individual fishing expeditions dont actually serve the end of eliminating infringement. This does not absolve individual liability, but it becomes important later.

* "Holding Cox liable merely for failing to terminate Internet service to infringing accounts would expand secondary copyright liability beyond our precedents ... The Fourth Circuit’s holding thus went beyond the two forms of liability recognized in Grokster and Sony. It also conflicted with this Court’s repeated admonition that contributory liability cannot rest only on a provider’s knowledge of infringement and insufficient action to prevent it.": This points to another case where Circuit and District courts have been ignoring the instruction of higher courts, in this case, inventing new liabilities where none existed. This doesn't go so far as to repudiate entirely the idea of fishing expeditions having teeth, but it places a clear guardrail around expanding liability without laws establishing such.

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The Sotomayor concurrence on judgment states that the Justice does not believe the methods used by the majority opinion are correct, but still agrees with the judgement because of insufficient information presented by Sony. I think the analysis gone into in this section is flawed, but it is also not precedential since it is not the Order part of the opinion. I am also out of time to poke at that part for the moment. It does relate this case to the closest recent big case on secondary liability though, that of Smith & Wesson Brands, Inc. v. Estados Unidos Mexicanos, so its worth reading even if the justifying analysis I think does not fit.

The big difference I guess is whether you think negative jurisdiction (limiting what the government can do) vs positive jurisdiction (further enabling the government) is more important, but considering HN and the exhortations against divisive commentary, I'd rather not dive into the weeds arguing that part here.

https://en.wikipedia.org/wiki/MGM_Studios,_Inc._v._Grokster,....

https://supreme.justia.com/cases/federal/us/545/913/

At worst, universities crack down harder on torrents, but that was always an option for labels.

The gun company will claim they sold for self defense or just for a hobbyist's collection - They'll claim that the gun owner used it for something else is not their responsibility. Same for any or product that can be used to kill someone with.