I also had trouble with this, especially as it got to the supply chain, where one company's demand is another's supply. One explanation that fills some gaps fo

I also had trouble with this, especially as it got to the supply chain, where one company's demand is another's supply. One explanation that fills some gaps for me is that the shift itself reduced efficiencies. They give an example of this at the consumer level, where spending moved from services to goods, putting a new kind of pressure in raw materials and shipping. Another I'm aware of is in energy, where disruptions and shifts in use case for energy are forcing use of less efficient types of energy production. Reduced efficiency doesn't show up cleanly in supply and demand curves because it happens in between the transactions where you measure them. And after thinking once about it, it's impossible to unsee all the ways a sudden shift reduces operating efficiency of almost every kind of economic unit.