It is part industrial policy and it is part economic war. The US hurts Chinese companies, whether it be Huawei or some crane manufacturer, with their export controls and national security "concerns".

At the end of this, decades from now. Will it have been worth it? Will the US have created a bigger economic loss in China than the value of their own lost business (whether directly or indirectly by the local alternatives these policies foster)?

So far, the US has done massive damage, that is for sure, but ultimately, I am not sure how the tally will be.