There’s a lot of lithium in the world. There’s no particular worries about running short, and many innovators such as E3 are working to make places where it isn’t dirt cheap and easy at least competitive. Canada’s oil and gas region might have a secondary product as demand for their primary output dries up. Source: https://cleantechnica.com/2021/02/24/canada-used-to-provide-a-lot-of-worlds-lithium-but-can-it-revive-that/