Also important to not that until a few decades ago, lithium was not a valuable commodity. So, we've barely started the process of actively looking for it. It's

Also important to not that until a few decades ago, lithium was not a valuable commodity. So, we've barely started the process of actively looking for it. It's estimated to be a fairly common element in the earth crust. If you contrast that with fossil fuels where we've had decades of very well funded research to identify new deposits of oil and gas, there are probably loads of unknown deposits of lithium.