It's funny that the example given is of Musk reasoning to how batteries can be much cheaper than they are. And yet Tesla buys their raw batteries from third pa

It's funny that the example given is of Musk reasoning to how batteries can be much cheaper than they are. And yet Tesla buys their raw batteries from third party manufacturers just like almost all other EV manufacturers. So I'm a bit confused as to the value of this particular example. Furthermore, batteries still do not cost anywhere close to what Musk predicts. Perhaps that's because he completely ignores manufacturing costs in his analysis. The price of a sewing needle costs a lot more than the cost of the raw materials.