Supreme Court issues a unanimous 9-0 decision may becoming one of the most useful legal developments the Second Amendment has seen in a long time

A unanimous Supreme Court ruling that had nothing to do with guns on its face may still prove one of the most useful legal developments the Second Amendment movement has seen in a long time.

That is the argument attorney Mark W. Smith made in his latest video on The Four Boxes Diner, where he said the Court’s 9-0 decision in Cox Communications v. Sony is “hugely beneficial” to both the Second Amendment and the gun industry. In Smith’s telling, the ruling matters because it reinforces a simple but powerful legal principle: if a company provides a lawful product or service, it generally cannot be held liable just because someone else later misuses it.

Smith said that matters enormously for gun makers, gun sellers, and the broader firearms space.

His reasoning was straightforward. If anti-gun activists cannot ban firearms outright, they often try to attack the industry through lawsuits, hoping to make it too expensive, too risky, or too politically toxic for companies to keep making and selling guns. In that kind of environment, a Supreme Court ruling that sharply limits liability for third-party misuse can become a very useful shield.

What The Supreme Court Actually Decided

Mark Smith said the case itself involved copyright law, not firearms.

According to Smith’s summary, Sony and other copyright holders sued Cox Communications, arguing that Cox should be held liable because users of its internet service allegedly used that access to illegally download copyrighted music and videos. Instead of simply going after the people who actually committed the infringement, Sony tried to impose liability on the company that provided the internet connection.

Smith said the Supreme Court rejected that theory in a unanimous opinion written by Justice Clarence Thomas.

As Smith explained it, the Court’s position was that merely providing a lawful service to the public does not make a company automatically liable just because some users misuse that service for unlawful purposes. In other words, go after the bad actor, not the lawful provider standing further upstream.

That principle may sound obvious when framed that way, but Smith’s whole point was that anti-gun lawfare often depends on trying to blur exactly that line.

Why Smith Says This Helps The Gun Industry

Smith connected the Court’s logic in Cox directly to the way anti-gun groups and blue-state officials often frame lawsuits against the firearms industry.

He said those efforts usually try to pin responsibility on manufacturers, sellers, or others in the lawful gun space for crimes committed by people they do not know, cannot control, and never intended to assist. In his view, the theory is always some version of the same argument: the company made or sold the product, so the company should pay when someone misuses it.

Smith argued that the Supreme Court’s new ruling cuts against that approach in a very important way.

He put it plainly. If someone uses a gun to commit a crime, the person who committed the crime is the one who should be targeted, not the company that lawfully made the gun or sold it through legal channels. To make the point more vivid, he used other everyday examples too, saying the same logic would otherwise threaten makers of baseball bats, ropes, steak knives, cars, telephones, and computers.

That analogy is one of the stronger parts of his argument because it shows how unstable the opposing theory becomes if pushed too far. If a lawful product manufacturer is responsible every time someone misuses a product, then liability starts swallowing whole industries.

The Betamax Connection Matters To Smith

A big part of Mark Smith’s excitement over the ruling came from the precedent underneath it.

He said the Court in Cox Communications v. Sony reaffirmed the old Sony or “Betamax” principle tied to a decision written years ago by Justice John Paul Stevens. That earlier case dealt with video recording technology, and Smith said it established an important idea: a product that is capable of substantial lawful uses cannot simply be treated as illegal or actionable because it can also be misused.

Smith emphasized that he had written about this exact theory back in 2020, arguing in a law review article that the reasoning from the old Betamax case could help protect the American gun industry from politically motivated lawsuits.

In his view, the new unanimous ruling is a vindication of that argument.

That is an interesting twist because, as Smith noted, Stevens was no friend of the Second Amendment in the broader sense. Smith pointed out that Stevens later called for repeal of the Second Amendment and played a role in pushing language gun-rights advocates have long disliked in the Heller era.

But Smith argued that judges sometimes articulate legal principles that reach farther than their own politics, and he says Stevens did exactly that in the Betamax context.

Justice Thomas’s Language Stands Out

Smith spent part of the video reading and paraphrasing language from Justice Clarence Thomas’s opinion, and he clearly thought the phrasing was important.

According to Smith, Thomas wrote that countless people use the internet for lawful activities, even though some use it to illegally share copyrighted material. The Copyright Act lets copyright owners sue the actual infringers, but that does not mean they can automatically sue the service provider simply because the provider continued offering internet access that some wrongdoers used.

Smith highlighted what he saw as the key line from the Court’s logic: a company is not liable as an infringer “for merely providing a service” to the general public, even if it knows some people may use that service unlawfully.

That is the phrase Smith wants the gun world to pay attention to.

He said that if you swap out the name Cox Communications and insert a gun manufacturer, a gun retailer, or anyone else in the lawful firearms space, the analogy becomes obvious. In his telling, the Court is reinforcing a broad principle that lawful providers are not automatically on the hook just because criminals misuse a lawful product or service.

That does not mean every gun-related lawsuit disappears overnight. But it does mean the legal foundation for pushing back against those suits may have just gotten stronger.

Smith Ties The Ruling To PLCAA

Mark Smith also tied the ruling to an existing federal law that already protects the firearms industry from many forms of third-party liability: the Protection of Lawful Commerce in Arms Act, or PLCAA.

He reminded viewers that PLCAA was enacted to stop exactly the kind of lawfare that tries to blame lawful gun companies for criminal misuse by unrelated third parties. In his view, the Supreme Court’s new decision does not replace that law, but it does provide another helpful precedent courts can look to when evaluating similar theories of liability.

Smith said Congress embraced the same basic logic when it enacted PLCAA: gun makers and sellers should not be treated as the legal culprits for harms caused by criminals they do not control.

That is why he sees the Cox ruling as bigger than the headlines might suggest.

At first glance, it looks like a copyright case about internet service providers. Through Smith’s lens, though, it becomes part of a much larger legal wall against attempts to bankrupt or cripple lawful industries by blaming them for third-party wrongdoing.

And that is exactly how many Second Amendment advocates have come to understand the modern legal fight. The argument is not only about bans anymore. It is about whether hostile officials can use civil litigation to bleed the industry dry.

Why The Unanimous Vote Matters

The 9-0 vote seemed to matter a great deal to Smith, and it is easy to see why.

A narrow ideological split would have made the ruling easier for critics to dismiss as just another culture-war opinion. A unanimous Court, by contrast, sends a different message. It suggests that this principle is not some fringe reading of the law, but a broad one that all nine justices could get behind in this context.

Smith clearly sees that unanimity as especially valuable because it gives future litigants more than just a favorable case name. It gives them a strong signal that the Court is united on the basic idea that lawful providers are not automatically liable for unlawful misuse by others.

That kind of clarity can matter a lot in lower courts, especially in lawsuits where creative liability theories are being used to go after politically controversial industries.

And that is one reason this ruling could have life well beyond copyright law.

The Real Win Is Not Obvious At First

One of the more interesting things about Smith’s video is that he acknowledged this may not look like a gun-rights win on the surface.

It is not a Second Amendment case. It does not mention firearms. It is not a direct challenge to a gun law. There is no flashy holding about carrying, owning, or purchasing weapons.

But Smith’s point was that legal victories for gun rights do not always arrive wearing a gun-rights label.

Sometimes they arrive in the form of a general rule that protects lawful commerce from being destroyed by guilt-by-association liability. And in his view, that is exactly what happened here.

That is a fair point, especially in an era when the firearms industry is often targeted indirectly. For gun-rights advocates, the fear is not only that the government will ban the product. It is that activists and officials will make it impossible to manufacture, finance, insure, advertise, or sell the product at all.

A ruling that strengthens the idea that lawful businesses are not responsible for every criminal misuse of their products may not solve every one of those fights. But it certainly does not hurt.

Mark Smith’s Bottom Line

By the end of the video, Mark W. Smith left little doubt about how he sees the ruling.

He called it a big win for the Second Amendment and a big win for the American gun industry, even if the connection is not obvious to casual observers. In his framing, Cox Communications v. Sony gives courts and litigants another Supreme Court-backed precedent saying that lawful providers of lawful products or services are not to blame simply because someone else later abuses them.

For Smith, that principle is not abstract.

It goes directly to whether the firearms industry can continue operating in the face of increasingly aggressive lawfare. If gun makers, sellers, and related businesses can be sued into oblivion every time a criminal misuses a gun, then the right to keep and bear arms becomes far weaker in practice no matter what the Constitution says on paper.

That may be the most important line of thought in his whole report.

Rights on paper still depend on real-world access. And access depends on an industry being allowed to exist without being crushed by lawsuits for conduct it did not commit.

That is why Smith thinks this unanimous Supreme Court ruling matters so much. It may not be a flashy Second Amendment opinion, but in the long war over whether lawful gun commerce can survive hostile legal tactics, he sees it as a very useful brick in the wall.