That I would believe. I worked in the warehouse, not in headquarters. But the systems we used to look up and track inventory were basically terminals. Old school green and black terminals with arcane commands.
I would absolutely believe that they don't want to try and compete with the tech sector for talent, and their management doesn't have the same understanding of tech that they do of running a warehouse business.
I bet those old school terminals are faster than what most corporate IT systems would deliver with an over the top modern framework. It's probably cheaper to train new employees than give away millions of dollars to an outside IT tech firm which may not result in an improvement.
I would absolutely believe that they don't want to try and compete with the tech sector for talent, and their management doesn't have the same understanding of tech that they do of running a warehouse business.