A simple, yet very powerful, weapon for ensuring a healthy economy. Having at minimum two potential sources for any component in the economy, with anything that can't afford that classified as a Utility and regulated as such.

From the single or none fulfillment of broadband options in the US even in dense suburban areas, let alone rural areas, it is clear that there are places in dire need of similar government market regulation.

The DoD requirement enabled commercial customers to specify it, too. The supply-chain nightmares experienced by makers of modern equipment, with microcontrollers only just designed in dropping out of production, generates nostalgia for the power to require a second source.

Portability of embedded-code source, standardized ISAs, and ability to turn around a new circuit board design in a week, and FPGAs all help make lack of second sources survivable.