It will not gonna happen and if it will happen that bitcoin is dropped to 1$ then it will so many years to reach amount that is going today. i am right ?
And if it will drop to 1$ then no one can invest in bitcoin because no one is investing money from where you get profit after few years. People invest money from where they get profit within 2-3 months.
People would probably not have belief on it anymore if it breaks like that, people are recently loving bitcoin because it is a growing money, so if it drops drastically no one would have interest in it as that wont be able to earn them anything on that time.