I’m not convinced that each automaker needs its own dedicated battery factory. Especially as the tech is still quickly evolving. Let LG and others build out at risk.
But LG and the other battery makers are not going to build out new capacity in anticipation of demand. They're waiting until they have contracts in hand before committing to building more capacity. That's a smart business practice on their part, especially after the glut on the li-ion battery market several years ago. But it means battery supply will constantly
and significantly lag behind demand as the EV revolution continues to accelerates.
Ford built its River Rouge industrial complex to enable it to rapidly ramp up production of the Model T. Some say Ford wasted money on that because eventually most of it was abandoned in favor of buying parts from suppliers. But I argue that was
necessary, back in the day before there was an entire support industry of auto parts makers. If Ford had not done so, it would have been very constrained in how fast it ramped up Model T production. Ford never would have captured 90% of the automobile market in that era, or anywhere close to 90%.
Similarly, BYD and Tesla building out high-capacity battery factories is
necessary these days, when so few >100 mile range plug-in EVs are being made, and none except the Model 3 (and maybe one or two BYD models) in large numbers. Perhaps 15 or 20 years from now, when the EV revolution is well advanced, it won't be necessary for auto makers to directly control their own battery supply. But today, that is absolutely necessary for any EV maker which wants to be able to ramp up production to the level of one of the better-selling gasmobile models.
Just because they are not tweeting about their battery production plans, doesn’t mean they don’t have plans.
Apple managed to hide its development of the first iPhone. But nobody could hide building a high-capacity battery cell factory. There would be too much construction activity, and too much hiring of new employees and engineers, to hide such a large project.