> The machinery to make this is extremely complicated and takes 6 months or more to build, by which time there may be no demand. No amount of invoking the defense production act would change this reality.

I'm surprised no one in the comments so far has challenged that these machines actually take 6 months to build.

There would literally be hundreds of suppliers of the components of these machines around the world - and the process of making the masks and fabric is not rocket science: https://www.thomasnet.com/articles/plant-facility-equipment/...