How California views ES in the future.. according to Forbes:

https://www.forbes.com/sites/jeffmcmahon/2020/10/06/california-shifts-attention-from-lithium-ion-to-zinc-energy-storage/?sh=22d319b11875

"Among the different chemistries present on the market, the Vanadium Redox Flow Batteries (VRFB) is currently the most adopted type of chemistry, also due to its long historical development from the 1980s"  This quote from the link below:

https://www.automation.com/en-us/articles/october-2020/energy-storage-market-beside-lithium-ion-batteries

The subject of "Structural Batteries" of different types ( Li-Ion, Solid Lithium Ion batteries and Zinc - Air ) is discussed in the following article from "Wired":

https://www.wired.com/story/the-batteries-of-the-future-are-weightless-and-invisible/

Again, multiple solutions possible for the subject of Energy Storage.  My opinion is that the field is big enough for multiple players and that no single ES "solution" will reign Supreme.  Each will have its own niche where it has advantages that the others don't.