I agree, there is no need for a blockchain. But, that explanation is what has been proposed as the justification for using one. I would counter also that neith

I agree, there is no need for a blockchain. But, that explanation is what has been proposed as the justification for using one. I would counter also that neither of your examples are actually supply chains. FedEx is part of a supply chain, but only a single member. the chain includes the manufacturer, wholesaler, etc. Uber also doesn't have a supply chain with its drivers. It is not running a supply chain for that purpose, it is a marketplace.