The most pressing issue regarding domestic production would be the climate for silkworm rearing. All other downstreem processing (ie reeling, weaving, etc) can essentially be identical to how it's silk is processed around the world. The bottleneck is the rearing. The RFI was created to help companies overcome their bottlenecks to domestic production.
Are you forgetting that Kraig Labs is already in the late stages of production in Vietnam? You must be forgetting that that is a for-profit endeavor. Profits which will fund the companies expansion globally. The RFI and support from the Air Force is to incentivize the company to build in America. Not really sure why this is so hard to grasp.
How do you think they have been doing it in Vietnam for the last 6 or 7 centuries? Do you think back then they've been using FedEx or UPS for crying out loud. Did they have specialty storage facilities for the product back then? I am sure security and storage wasn't a major concern or cost.back then or now. If they can get supplies to and product from for all those centuries I cannot imagine it is that difficult or that expensive today. The big nut is the facility, the rest is peanuts.