Let me throw out a guess, you think it'll be the hydrogen FCEV's that will take over? Those can be pretty expensive right now though. Do you think the technology will improve and get cheaper over time by any chance?
Sure. In fact, FCEVs can be as cheap as ICE cars. They completely avoid the problem of needing giant batteries. As a result, their cost floor is the same as conventional cars today.
Can you really argue that BEVs will survive if you knew that? The better question is why would we even need BEVs if hydrogen cars prove to be far cheaper?
Unlike you, I actually know something about the subject. BEVs are never going to be particular cheap cars. The only exceptions are things like neighborhood cars. Basically, the only make a BEV cheap is by not giving it any range.
In reality, it will be something else like FCEVs. And you should be more open to this possibility, not closemindedly think that it can only be the BEV.
PS: You do know all favorites/boosts/reduces are public right? Like I can see that you are reducing all my posts. I'd prefer it if you don't carry over this bit of Redditism.