Wait, how can bitcoin survive to upcoming crash?
When the bankers' ponzi scheme finally collapses, you'll ask your landlord "hey can I pay this month's rent in Bitcoin". He'll likely say well my bank is closed so I guess yeah.
Then you'll head down to the local grocery store and ask hey can I pay this week's groceries in advance, I'll pay in Bitcoin. They'll say cool.
That's how Bitcoin gains widespread use when the failed banking system finally goes down.
What gives you the reason to think like that? Then if market, pharmacy and etc will happily accept bitcoin payment, this means whole world will move on bitcoin. But it's another task, can bitcoin handle this? As you see last year high demand on bitcoin caused very high fees on transactions + some exchanges closed registration.
Also consider the fact that walmart's consultant won't accept that payment if walmart's administrator won't give him a right, I said that as an example.