We have spend billions on research and development. The difference here is we have fall behind Western technology for over 100 hundred years. We are not fortunate enough like some of your allies who can share and enjoy the benefit of Western tech transfer or license. Therefore our choice is limit to learning the quickest way possible, including any possible meant. Let not forget the US advance in tech is also spying on other countries, Nazi and Soviet Union, to name a few. Why are we being penalized for doing the same? You see, my friend, it doesn't work that work. The result is what matter to us.