> ...imagine you had full transparency to your supply chain.

As a layman, this would be an information deluge that I would be utterly unqualified to evaluate... even _if_ I had the time required to examine the supply chains for the hundreds (or tens of thousands, depending on how you split out the BOMs) of separate things I purchase each month.

As a hypothetical exec at Wal-Mart, I almost certainly have the power to order potential suppliers to reveal more than enough information about _their_ supply chains to satisfy every bit of interest I possess.