It never will and will never happen, if FUD appears then it will be good news for the market,
because Bitcoin has often been getting news that Bitcoin will die and bitcoin will go to zero,
but look at it now! how did bitcoin develop and how was bitcoin adopted? yes! bitcoin succeed to change the world!.
If the price of Bitcoin drops to zero due to some improbable reason, then there will be a golden opportunity for Bitcoin lovers and investors. The possibility of buying Bitcoin at such a low price will attract many consumers, including myself, who understand the potential and value of cryptocurrency in the long run And this are happens next if bitcoin drops to zero .
I think what you think is never possible. If bitcoin price drops to 20k$ then the market will be very dire. And the thinking you are doing here is completely stupid. Bitcoin market is going through a very bad situation right now. Hope so. Bitcoin market will get better soon but we have to wait for that.