America owes its very existence to the land it stole from Native Americans. It owes a huge part of its prosperity to the entire lives it stole from generations of black people by using them as draft animal (hence freeing the white man to think about science, mathematics, whatever). The entire material infrastructure that enabled the production of these fruits of the intellect is stolen, with direct violent human consequences (by comparison, the consequence of "IP theft" is that certain already well-to-do entrepreneurs make less money than they think they are entitled to). It's like if I kicked someone out of their house, adducted someone else, put them in my basement in chains to work for me. I then did a bunch of experiments and came up with some nice designs. But as I was the process of monetizing them I realize someone else stole the design for me, and now I suddenly feel morally outraged. How can he do that to me? The injustice!!

(To anyone who's prepared to invoke 'whataboutism' or whatever, note that my point is that the US's moral outrage is hypocritical, given its extensive history of (much more violent) theft. It's not about whether "IP theft" is morally permissible.)