I think it's pretty implausible that the main use case for hydrogen will be energy storage when so many important industrial processes require a good reducing a

I think it's pretty implausible that the main use case for hydrogen will be energy storage when so many important industrial processes require a good reducing agent that's either currently hydrogen generated from natural gas or carbon monoxide from coal. Steal production, fertilizer production, etc. It's a pretty large chunk of our current global energy use.