This has been my understanding for e.g. European chips as well:
First you subsidize and support the creation of currently not commercially viable chip fabs on-shore. Literally handing companies money under some obligation into the future.
Eventually the on-shore chips are produced, but they have higher total cost of ownership for the users: Logistics may be cheaper due to less distance, or more expensive because they are not well-trodden paths yet. Production costs like labor, water, energy could be higher. And the chips could just have higher failure rate, because problems in the new processes need to be kinked out.
But to get local consumers to switch to these switches, one applies tariffs to other sources of chips so the on-shore chips become more competitive artificially, until they become actually cheaper and competitive.
The way it is threatened here isn't in the use case of tariffs at all from my limited understanding.
First you subsidize and support the creation of currently not commercially viable chip fabs on-shore. Literally handing companies money under some obligation into the future.
Eventually the on-shore chips are produced, but they have higher total cost of ownership for the users: Logistics may be cheaper due to less distance, or more expensive because they are not well-trodden paths yet. Production costs like labor, water, energy could be higher. And the chips could just have higher failure rate, because problems in the new processes need to be kinked out.
But to get local consumers to switch to these switches, one applies tariffs to other sources of chips so the on-shore chips become more competitive artificially, until they become actually cheaper and competitive.
The way it is threatened here isn't in the use case of tariffs at all from my limited understanding.