Speaking to specifics - my wife is a Senior Engineer at a microchip firm that produces various boutique level chips including some with military applications that have recipes that cannot be altered. One of the common substrates in many chips is Tungsten (note, this is a SINGLE element in production, you can guess how many others are similar).
557% increase in cost. Now, I’m sticking to general terms, but those costs are NOT going to absorbed by the company, especially after getting burned in the boom/bust cycle for chips during and after Covid. NO ONE is going to be eager to start up new lines (or even put mothballed lines back into active use) without a major, upfront infusion of cash, unlike the CHIPS act that worked on a partial reimbursement basis. And that leaves out the cost of hiring new staff, getting them trained as operators, etc. etc. etc.
Exactly as @dtilque put it, this is not technology that can be run off any general tool line. And the time to have started the lead up to allow increased production at all levels was years ago, certainly not after initiating a conflict. Automakers are in no way equipped to handle (per @EddyTeddyFreddy’s cite)
The talks come as the military seeks to increase production of munitions and tactical hardware, including missiles and counter-drone technology, the report said.
I suspect that the whole article reflects the Trump administrations absolute lack of knowledge and experience while the auto makers trying to politely explain to them that they’re out of their minds.