One big issue is that the largest supply chain participants generally do not want transparency because they make their money on opacity. Transparency attracts m

One big issue is that the largest supply chain participants generally do not want transparency because they make their money on opacity. Transparency attracts more entrants, applicants, and competitors. It is business intelligence that provides important things like pricing advantages. When competitors can see your supply chain, they can do all kinds of stuff to make your life harder and gain an edge. Almost everyone at every stage in the supply chain have an interest in opacity rather than transparency. The people who may want transparency want transparency for themselves but not for others: they want the equivalent of a one-way mirror to spy through. Naturally, people tend to react with extreme negativity to the installation of such one-way mirrors. Actual transparency is desired by almost no one. This is even true at the consumer level: the consumer may want to know the supply chain information for various purposes, regulators certainly want to know it, business partners certainly want supply chain documentation, but a consumer would balk at the notion that they expose all of their credit card transactions to the entire world at all times. It's always transparency for thee and not for me.