Some of your examples are good, but many aren't based in reality for the US consumer. A lot of consumer goods are manufactured overseas, then imported to the US

Some of your examples are good, but many aren't based in reality for the US consumer. A lot of consumer goods are manufactured overseas, then imported to the US. The manufacturers of these goods rarely create custom versions that rely on inch-based hardware. The ISO nomenclature isn't very common, but 16mm wrenches are very common. Pretty much any US resident who wants to work on their car or assemble products without using the supplied stamped wrenches has to have both imperial and and metric tools. I've got a whole tool chest full of that mix in wrenches, sockets, and hex drivers. When it comes to highways and tape measures, you're right though. A tape measure is most commonly used in carpentry, which is almost entirely imperial. Our cars all have speedometers that display MPH in large type, so I don't see that changing without some mandate.