1. Car Manufactures canceled their order (X) for 6 months.
2. Fab sold those capacity to others
3. Demand for All electronics increases because of WFH ( and possibly bitcoin )
4. Demand for Car actually raised during COVID.
5. Now Car Manufacture want X, their original order, another X for their next 6 months, as well as 0.5X where 0.5 was the increase in demand. So total 2.5X
2.5X increase in order to catch up with their production All while other electronics such as iPhone 5G, Tablet, PC are selling record number in recent years.
It also doesn't help when Samsung's yield are failing yet again
Now let's take this even further. Apple is predicted to sell record number of iPhone, Mac, and iPad. TSMC will do preferential treatment to all orders relating to Apple with Apple courting their suppliers. So that uses up those bigger nodes as well. You end up having industry fighting for whatever that is left.
And just like any product or commodities, you have people hoarding them for profits. It is the same with PS5, Switch, Graphics Card or any other with limited quantities and high demand. This will attract interest to trade them and make money. Which add even more strain to supply chain.
From a Supplier perspective, all of a sudden you are looking at a market with seemingly unlimited demand and you have limited supply. This scenario is similar to what happened with DRAM and NAND in 2015 - 2019. Although the cause is different.