Kraig Biocraft Laboratories Inc (KBLB)

[GTman1]

I wrote many posts on this subject a couple years ago.

Here is a link to one of them. It is post 142435

POST 142435

In it I give a link to just one of the many publications on economics of the bioprocess and protein fermentation.

Here is a quick link to that publication. The whole thing is available in PDF form, but starting from section 11-44 with Human Insulin is a good start:

BioProcess Design and Economics, 2nd Edition

If you couple this reading with the published patent by Bolt Threads and Spiber, you will see that all the protein production companies use very similar materials and methods.

If Spiber somehow figured out how to produce custom proteins for, say, less than $20,000/kg, then they wouldn't be wasting there time on spider silk. They would be falling hand over fist trying to license their process to every pharmaceutical and protein production manufacturer on the planet. There would be many 100's of $billions of low hanging fruit before they would ever need to get to spider silk fibers. The truth is, Spiber doesn't have this process. Neither did Bolt Threads which is why they pivoted to mushroom leather.