Further, the apparently requirement for "money to change hands" falls flat on it's face. The last node in the supply chain for virtually any real-world product

Further, the apparently requirement for "money to change hands" falls flat on it's face. The last node in the supply chain for virtually any real-world product is "human beings extract the material from the earth in some way/shape/form". No human being paid "the earth" money for this, yet it is a fundamental component of supply chains (and, recently, a fundamental component of many supply chain issues). "The earth" also doesn't offer any guarantees or quality assurance. Attempting to interpret these processes as requirements to be part of a "supply chain" excludes the core foundation of traditional supply chains.