Truth is Nikon USA will service items built by Nikon no matter what. They will usually not investigate the original trade channel, because it is irrelevant.
A camera repairman friend confirmed that he could not buy parts for Nikon cameras in violation of California law.
Frank, you do not live here. You do not know.
Dave Hartman
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It's quite easy to speculate that Nikon USA wants a monopoly on importing Nikon products into the USA. Nikon USA does not under US law have a monopoly so they are refusing to repair "white market" Nikon camera, that's right it's perfectly legal under US law for anyone to import Nikon products into the US so it's a white market.
In the old days EPOI was the official Nikon importer and EPOI was not owned by Nikon so it had legal monopoly on import. This fuss about "gray market" didn't exist as EPOI had customs on its side.
Nikon is refusing to sell parts in California because they will be shipped everywhere in the US. If they loose or have lost they will have put many independents out of business. They tried a change of venue to New York state as there they can refuse to sell parts in New York. The change of venue didn't work. I haven't followed the lawsuit.
I like Nikon products. I don't like the company [Nikon USA]. I'm married to Nikon through my legacy Nikkor lenses.
I haven't time for any more of this.
Dave Hartman