You couldn’t replicate that in say San Francisco just by separating the infrastructure, while still requiring everything to be buried and look pretty, and requiring unprofitable neighborhoods to be served at the ISP’s expense, etc., and all of the roadblocks places like San Francisco throw up to development. All with San Francisco municipal government types overseeing everything and San Francisco NIMBYs protesting and filing lawsuits over the color of the fiber distribution hubs. It wouldn’t work.
This argument strays into racism, or a circular argument. Either the Japanese are uniquely genetically capable of building public goods cheaply, or their continued success is a result of how they have structured their society.
If it isn’t genetic (how could it be?), this is an argument for emulating the uniquely Japanese cultural aspects that led to the success.
The Japanese take pride in infrastructure and development. Americans try to figure out how to abuse environmental laws to keep it from being built. We turn every development project into a civil rights battle or a rural/urban battle. We hate paying for development with visible taxes, but love creating invisible taxes by attaching mandates as riders to projects. “You can build that apartment building, but only if you widen that public road and build a school. You can build fiber there, but only if you also build fiber in this place where it makes no economic sense.” That often makes development unattractive altogether, but that’s okay because we hate development anyway.
Complicated to say the least. NTT doesn't just offer its own Internet service, it has three different subsidiaries all competing to offer their own Internet services