The benefits only get really apparent when almost everything has easy to scan barcodes. Also, presumably these suppliers will be supplying to competitors of Wa

The benefits only get really apparent when almost everything has easy to scan barcodes. Also, presumably these suppliers will be supplying to competitors of Walmart, so it doesn't make sense for Walmart to fund their shared efficiency gains. Everyone would end up making the same gain, and Walmart wouldn't end up any further ahead of the competition.