Denying tech sales to China, at this stage is just causing minor nuisance. In not-so-far future China is going to be much stronger economy than US ever was. If

Denying tech sales to China, at this stage is just causing minor nuisance. In not-so-far future China is going to be much stronger economy than US ever was. If they want the bigger computers, they will have the bigger computers. Just calculate any "damage" done with those export rules on Chinese military - is it $2B more that needs to be spent in order to get the same capability? Or $20B? You can just watch that money float right past you to their domestic HPC and CPU industries. In effect, US is trying it's damnest to make China competitive in the one major high tech export industry that it still has undisputed world leadership in. Only circumstance this would make any sense would be if you were sliding fast and inevitably to open conflict, and causing them setbacks worth of a few months to a couple of years would be vital. Since that is not the case, this has nothing but "strategic blunder" written all over it.