So, people will just buy more american watches in your example, no?
You have to look at the elasticity of demand across every component to determine the correct ratio.
What i can tell you, as a GSM, from a CapEx perspective, sensors, motors, cables, and batterys made in the US just got significantly more competitive. It was already trending that way due to JIT demands and rapid factory buildouts, but the tarrifs were a huge marketing boon for american supply chains.
And i can tell you for the first time as someone in the supply chain business i can confidently ask the question "Should we be buying this bolt from Insert country here?".
It's almost like i've been given the authority to source products from the United States even if we are paying some percent higher.
As it is, American spending is way down and hurts everyone. A small stock crash (the thing propping the US up as of now) would truly hit with a 2nd depression at this point.
For one example, the domestic PCB manufacturing industry is a joke. Even with tariffs, China is literally ten times cheaper than domestic. I recently sent an order to both, and the China fab had my boards in production inside a week. The US fab took three weeks to give us a quote, which was five times higher than China for half the quantity, in twice the time.
The US is not independent. We don't have a domestic industry competing on the global market. We make very little and rely very heavily on imports. What we do make is heinously expensive and not any higher quality than the much cheaper imported goods.
The current trade war also doesn't spur domestic industry growth because all the materials and equipment to build out industry.... is tariffed. Plus the tariffs change too frequently for any sane person to make any kind of long term investment.
Industry will wait to scale until economic forces stabilize.