Unlike in past industrial revolutions, we aren’t swimming in massive pools of excess labour. Population-control policies and incentives, reproductive technologies and lower fertility have over the decades put the bite on population growth—to the point that many economies on the planet have very slow increases in population, or even outright declines. Mechanization has become necessary, in many cases, just to keep growth going; if we didn’t change the contribution of capital to growth, in many cases, there simply wouldn’t be any. Today, mechanization displaces people who don’t actually exist, and more and more, it’ll be used by entrepreneurs to keep the shop lights on.
Current conditions bring another issue to light: Technology has enabled globalization of supply chains, and as efficient and cost-minimizing as they are, there are also huge risks. Single-source supply points are vulnerable to natural disasters, like earthquakes, tsunamis, droughts, floods, wildfires and of course, pandemics, to name a few. As it happens, mechanization is less location-sensitive; machinery and equipment costs are much more geographically similar than labour costs. As such, dependence on far-flung production sites is much lower with mechanized processes, increasing the potential for greater process reliability.
Another key benefit of mechanization is scale. Labour-intensive production is naturally dependent on larger pools of labour, which tilts things more in favour of larger countries. Scale constraints matter less with more capital-intensive systems; smaller countries have a much better shot at world-scale operations if they’re more mechanized.