Great point, and important context here.
In Japan, they have an inspection process that ultimately serves as a disincentive for keeping a car for a long time. This is why the rest of the world has plenty of exported JDM cars to choose from.
https://garagedreams.net/car-facts/why-do-used-japanese-cars-have-such-low-mileage
So in a car market that favors new vehicles, that is more of a driver to push thinner and thinner oils for the fuel economy push, even if it were to sacrifice maximum engine life, since these cars are basically thrown away before it would matter.