I do not think Bitcoin will achieve zero even if people lose interest and start to die. There are many points in Bitcoin's history that are things of disaster that have happened and the price has never reached zero, and it will not happen that the value of Bitcoin will be zero because now demand is still increasing. Still many investors and traders who still believe as long as Bitcoin increases, will continue and have value.

Even new people start hearing first about Bitcoin before hearing about other Altcoin, as we can see, the price of Bitcoin actually dragging each Altcoin up or down.

But if this happens, then I think many will suffer huge losses and some will get a big profit.