How low would Bitcoin have to fall before it was no longer recoverable?
Price, in my opinion, would not dictate this. It would have to be something that would destroy the foundation and system on which it is built.
what you say?
Nobody can predict the future, especially when it comes to cryptocurrencies, but I don't believe anyone is speculating that the price of Bitcoin would eventually drop to one dollar. I just don't see how you came up with this idea after seeing it in this context, though. Unless every nation outlaws Bitcoin, which I believe is impossible because every nation has a different vision for how its economy will grow, I will just say that nothing cannot happen but that it will be exceedingly difficult to happened.
If it's true that one Bitcoin can drop to $1, then I believe it's also true that the price of Bitcoin can rise again, but only if there are real, observable causes for it to do so.