The DoD is those defense contractors and companies' _primary target customer_. That doesn't just mean they're dependent on them as a customer. That means everyone working with, for, and adjacent to them has knowingly signed up to work with a defense contractor and to sell to someone that wants to use weapons in anger. That means these companies were mostly _founded_ to do that.

So instead, I invite you to imagine a medical supply company refusing to sell medical-grade sodium thiopental to the Bureau of Prisons.