Things are more interconnected than they appear. Example, many U.S companies outsource their IP to be made elsewhere for cheaper labour, and as the cost to the U.S increases, so it will also affect other countries, it's a free-for-all at the moment, interesting times, lot's of money to be made for those that have capital and are not fearful.
To expand a little more, remember there are more in silicon to make a chip, well a GPU or CPU, there are other materials that are sourced from elsewhere etc. and so forth, which are also subject to tariffs from not only the U.S, but elsewhere.