Packaging is hard. I'd like to additionally nominate cables (as in wire harnesses) and strain reliefs to the list of things that make my life miserable.
Oh, yeah - hardware wears down over time in ways that software doesn't. Closest thing might be having to support new OSes, but that's not the same as failure when doing the exact same thing you always do in the same configuration.
Which leads to increased replacement costs. Other fun costs to account for in the physical world: loss rate in transit, defect rate in manufacturing, inventory costs.
Which leads to increased replacement costs. Other fun costs to account for in the physical world: loss rate in transit, defect rate in manufacturing, inventory costs.