> That American system is the bequest of America's British and Dutch founders: Anglo law, social and political norms, and civic culture, and Anglo/Dutch views towards markets and commerce. ... It's about correctly understanding the source of our own prosperity.
Now you're overvalorizing what you refer to as Anglo social and political norms. Those norms weren't a monolith — neither were they an unalloyed good.
The Anglos in question famously included enslavers of kidnapped Africans, mainly but not exclusively in the American South. Our whole constitutional system was bastardized to keep those worthies on-side for ratification.
To be sure, the spectrum of Anglo norms included abolition, mainly in the North. But in the South, those norms also included secession and civil war to preserve enslavement as an economic and social system.
IIRC, the enslaver class were largely of English stock — although many white southerners were of Protestant Scots-Irish descent (e.g., John C. Calhoun), and some of Welsh (e.g., Jefferson Davis).
Now let's talk about immigrants' cultural contributions: The residents of some regions of Germany were no slouches commercially. In the U.S., they and Irish Catholics were largely anti-slavery. German immigrants especially were pro-Union; that led to violence against them during the Civil War by Confederates. [0]
(I don't know enough about Dutch contributions to say anything useful about them.)
Bottom line: Let's not fetishize the Anglo-Dutch origins of the American system. The finest crop seeds will be useless without decent soil, water, and light. Seeds don't provide those things. And as summarized above, in our case the seed was far from uniformly good.
[0] https://en.wikipedia.org/wiki/Nueces_massacre