IMHO why can't both take one step back? Forbidding technologies flow leads to different standards in different countries. China forbode Google, Twitter, etc from rooting in China years ago, so China developed a totally different ecosystem than the rest of the world (basically) to take their place: baidu as search engine, QQ as IM, weibo as social media. This made Chinese hard to take a peek to the outside world, while the outside world also has a hard time peeking in.
And now US is doing pretty much the same. Just when Chinese companies are trying to develop overseas business, US bans them. And as people from US and China cannot communicate, hatred grows and lotsa Chinese are now volunteering to ban foreign products. This is truly meaningless.