Lots of industries have to plan for black swan events that hit once in a generation. But even then that's hugely optimistic. TPS/Lean has been in widespread use

Lots of industries have to plan for black swan events that hit once in a generation. But even then that's hugely optimistic. TPS/Lean has been in widespread use since what, the 80s? What happens when war breaks out, or we end up in a serious Geopolitical Conflict (Trade War), or run into another energy crisis or shipping crisis like what happened with the Suez Canal. Owning your supply chain is a core competency. It's just that a few decades of relative global stability has allowed us to bury our heads in the sand in exchange for a few short-term optimizations.