A Narrow Fix for a Fast-Growing Problem
On May 14, 2026, Japan's Ministry of Internal Affairs and Communications (MIC) published a draft report from its Study Group on the Approach to Access Suppression Related to Online Casinos, the body it convened in April 2025 to decide whether internet service providers should be forced to block illegal offshore gambling sites. Public comment closed June 15, 2026, and a final report is expected this summer. The draft's headline finding is that mandatory blocking's effectiveness "cannot be denied" — but it stops well short of recommending the government actually do it, deferring the decision while flagging deep constitutional problems (MIC draft report, soumu.go.jp; study group page).
The scale motivating this is real. A National Police Agency survey of 27,145 people, conducted July–October 2024, estimated that 3.37 million people in Japan have used illegal online casinos and that roughly ¥1.24 trillion is wagered annually — with 39.8% of those who had gambled saying they hadn't realized it was against the law (nippon.com summary of NPA data; NPA survey report). Online gambling has been illegal under Japan's Penal Code regardless of where the operator is based, but enforcement against offshore sites has always been close to impossible.
The Case for Blocking, Fairly Stated
Before dismissing forced blocking, it's worth taking the strongest version of the argument seriously. Japan already blocks child sexual abuse material at the ISP level (since 2011) and briefly experimented with blocking manga-piracy sites in 2018. Regulators can point to a genuinely large and underage-skewed harm — NPA data show usage concentrated among people in their 20s and 30s — plus operators who sit entirely outside Japanese jurisdiction and therefore outside the reach of ordinary criminal enforcement. If a technical backstop can meaningfully suppress access even at the margin, protecting people who don't know they're breaking the law is not a trivial goal, and MIC's expert panel was right not to dismiss it out of hand.
Where the Draft Undercuts Itself
But the same draft, and the reporting around it, surfaces the flaw that has haunted every blocking regime since the piracy-site debates of the late 2010s: circumvention is easy, and the people most likely to route around it are precisely the heavier, more determined users the policy is supposed to stop. Nikkei's coverage of the panel's March 2026 discussion notes experts flagging that "technology to bypass access restrictions exists," with some members arguing the draft was "unbalanced" in favor of an approach whose real-world effectiveness is unproven (Nikkei, March 23, 2026). Digital vice-minister Hideto Kawasaki has made the point more bluntly in his own commentary: even with ISP-level blocking in place, "users can bypass it relatively easily using VPNs or proxy servers," turning enforcement into what he calls a game of whack-a-mole against both users and offshore operators who can rotate domains faster than any blocklist updates (Kawasaki, note.com).
That asymmetry is the core policy problem. A blocking mandate imposes its full cost — the infrastructure, the monitoring, the legal exposure — on every internet user in Japan, while its actual deterrent effect falls hardest on the least sophisticated, least determined violators: exactly the population that, per the NPA's own numbers, is least likely to know it's breaking the law in the first place. Sophisticated repeat gamblers, the ones generating the bulk of that ¥1.24 trillion in wagers, are also the ones most likely to already know or quickly learn that a VPN defeats the block entirely.
The Constitutional Cost Is Not Hypothetical
MIC's own draft treats the harder problem as constitutional, not technical: implementing blocking requires an ISP to inspect the destination of every user's connection request and check it against a list, before deciding whether to let it through. That inspection is itself the injury. Japan's Telecommunications Business Act and Article 21 of the Constitution protect "secrecy of communications" (通信の秘密) as a near-absolute guarantee, and Impress's Internet Watch reported that the draft explicitly weighs whether the benefit of blocking would "balance against lost rights" — including both communications secrecy and freedom of access to information — without reaching a firm conclusion (Internet Watch, Impress). Unlike CSAM blocking, where the content itself is universally unlawful to possess, online casino access is a legal-in-many-places activity that happens to be illegal for Japanese residents specifically — a much harder case for justifying universal traffic inspection.
A Better Target Than the Pipes
Japan doesn't need to choose between doing nothing and building blocking infrastructure that VPN use renders porous. The draft itself gestures toward the more proportionate path: voluntary, opt-in filtering, takedown pressure on the social platforms that host casino advertising, and — as Kawasaki argues — payment blocking aimed at the card networks and payment processors that actually move the ¥1.24 trillion. Those levers target the transaction, not the connection, and they don't require inspecting what 120 million people are doing online to stop a fraction of them from reaching a gambling site a VPN would unblock anyway. MIC's panel deserves credit for not rubber-stamping blocking under public pressure; the final report due this summer should make that hesitation permanent policy, not just a hedge.