Having worked in a job shop, a factory that did gears down to quantity one, I became quite aware of the differences between IT, my previous job, and actual physical production. The machine tools were all made 50+ years ago. Changing anything was a dangerous thing to do, because you might cause jobs that have known and reliable setups that are done a few times a year in quantity, to fail, erasing the profits for the j…
I'm not arguing with your overall conclusion. However, the hardware situation you described sounds very brittle to me. If the machine shop is so tightly constrained and error-phobic, that sounds like there's very little space of tinkering, exploration or innovation. Unless that was your overall point, that capacity in hardware manufacturing has rotted away to the point where things are hanging on by a thread.
There are general purpose machines that you can make new parts on, and you open a pilot plant if you want to experiment with new manufacturing techniques.