The majority of the buildup is because 99% of the parts are in, but production cannot start until the missing few parts appear. That's the genius of the bottle

The majority of the buildup is because 99% of the parts are in, but production cannot start until the missing few parts appear. That's the genius of the bottleneck hording approach. But you still need ~$100 Billion dollars to pull it off, which mean only a few players in the world could do it. The problem comes from sitting on that 99% inventory for so long that the bills come due. Normally you get 45-60 days to pay and you sell your product by then so your cashflow is fine. But now, you need to get loans, interest rates are rising, etc. There is a finite time that companies can hold on before it all comes crashing down.