> So you pay about $165 more than the Shenzhen shop and get your boards five days sooner, with no customs and a supply chain you can count on.
A supply chain that also comes from Shenzhen... last time I checked, North America doesn't make chips or other components either.
Lots of use cases are more speed than cost sensitive. I.e. yes if you are paying a bunch of engineers in Boston who graduated from MIT to work on robotics $165 is a rounding error if you aren’t producing at scale.
Basically anything aerospace and defense related will care more about speed and compliance than cost.
North America doesn't make chips or components?
That's never been true (at least since the first chips or components). A lot of my Shenzhen orders have to wait on international airfreight on US-made chips because the ones I spec'd (basically the only ones that would do the job) are US-manufactured and warehoused.
Recommend you look at a world map of Intel fabs. Or Micron Fabs.