That is not the current situation.
The comment above did not say let's focus the next 10 years to build a software stack that does not depend on US software. It said let's immediately stop importing stuff from the US. That is not something you can in a moment substitute without massive disruption.
Computer parts are made in China and Taiwan mostly, sure. But: AMD is American, intel is American, Nvidia is American. Go build a computer without using parts coming from one of these companies.