If you have no expertise, why are you hyperventilating?
What I do have, which a lot of people here seem to lack, is a memory. I remember the beginnings of this tech war against China and all it's accomplished: zero. I remember the progress China has already made. I also seem to lack the propensity to hyperventilation common around here. I ask myself what's the worst that can happen? A few projects are delayed as they get retooled. Big deal.
Much more important than expertise is the ability to take a deep breath and think things through logically. The demand for semiconductors in China is measured in the hundreds of billions - that is going to get serviced by someone. If it's not American companies then it's Chinese companies, Japanese companies, European companies, Martian companies, whatever. Instead of that money going to American companies, it's going to go to others. Much as I would like it to go to Chinese companies and no one else, I know how markets function and I can already see the train of foreign companies knocking on China's door and hawking wholly de-Americanized products.
What's really funny is that American investors are going to divest from American companies because they just got shut out of the largest and fastest growing market for good. They're going to take that money and invest it in Chinese companies whose prospects just got a whole lot brighter. America, despite itself, is going to do its bit to power China's technological ascent.