That might matter if it had stayed in Finland, and had US companies like IBM and even our own ignorant government not invested billions (yes with a "b") in its development. But since they did, and still do, that technology shouldn't be legally given away for free, especially to regimes that offer us nothing in return, or even worse may use it against us one day militarily
Yeah, instead, they should buy copies of Windows and use THAT against us militarily.
The American investment you mention was not for purely original code; it was built upon someone else's work. The Americans did not need to pay for that original work any more than the Chinese, or you, would have to pay for their subsequent additions. Those are the terms of the GPL. It's that whole "Free as in speech, not as in beer" thing; a mighty subversive concept if you're a RedFlag kinda guy.