Really? Forced shutdowns -> things not being made -> not enough things... It's basic supply/demand. If demand stays the same but supply is interrupted, production needs to increase for the same amount of time just to satisfy the demand that went unfulfilled. If supply is interrupted and 'reopening' simply means going back to initial production, you'll always be playing catch up.
It's not that simple. Modern (just-in-time) practices have created a situation where a single change in customer demand leads to widespread supply shocks. Take a look at the beer game[0] for a smaller version of real life. That's what happened here - lockdowns led to a single change in customer demand for a wide variety of goods both on the personal side(more people at home -> snacks, food, toiletpaper that would hav…
Consumer preferences changed slightly *because* of lockdowns in addition to supply changing drastically *because* of lockdowns.
In our just-in-time supply chain system, interruptions of the magnitude we experienced aren't accounted for.