Some purchases come with strict protocols coded into contracts. Try buying F-35 and selling it to China, for example; See what happens. Other risk you not being able to purchase for yourself anymore and possible sanctions. H100 and others are under export control, I'm just not sure if it's an explicit export control or automatic, like what famously made PowerMac G4 a weapon export. I found a source there was an executive order for hardware exceeding 1e26 floating point operations or 1e23 integer operations. In any case, if an item is under export control that means paperwork and, if you're eligible to purchase, paperwork includes you also signing what you can and cannot do with the item purchased.

I feel the same about capital controls and crypto

People say “it’s used for money laundering” as if we’re supposed to be on China’s side about restricting people’s ability to move money out of the country over certain amounts

Like, oh you’re against freedom from a repressive regime? Or oh you’re only against it when it’s the American government restricting US citizens flow of capital? like I’m confused, pick a lane

Capital controls are obsoleted under any context