After realizing that there is not enough mining capacity to “produce” the necessary amount of metals to build enough batteries (not only lithium, but copper, nickel and much more), a mad scramble to find an alternative electricity storage solution began.
Sodium batteries made from non-scarce elements could be part of the electrochemical energy storage solution. The rest would be hydrogen.
It will not be cheap and it cannot be a drop-in replacement without dramatically reducing our energy needs.