As Washington discovered with semiconductors, export controls that aim to maintain a technological lead are double-edged. They may slow a rival’s catch-up, but they also incentivize the rival’s innovation and harm domestic interests. And they are hard to enforce. China is rapidly expanding its export controls to include not just rare earths but many other technologies where it has a lead. But the more controls it imposes, the more it risks choking off revenues and paths to innovation for its leading tech companies.
Battery makers are working hard to escape commodity hell by designing cells that integrate directly into electric cars’ bodies, boosting performance while making it harder for EV makers to switch battery suppliers. EV manufacturing is becoming a tug-of-war between battery makers, which like the pricing power that integrated design gives them, and carmakers, who need to decide how much flexibility they will sacrifice for better efficiency.