Good point, but is "supply chain optimization to ensure that computers get to their datacenters fast" a task that is not required at 2012 FB-scale, or is it an

Good point, but is "supply chain optimization to ensure that computers get to their datacenters fast" a task that is not required at 2012 FB-scale, or is it an optimisation that FB just didn't have the scale for in 2012. The former implies inefficiencies of scale. The latter implies efficiencies. I think both exist.