I just got this question in my mind. What will happen if no one knows about the pasword of his/her acount will it posibly deduct to the main supply of bitcoin? Example bitcoin was 21million supply and one man got 1 million bitcoin he was holding and suddenly he died no one can open his wallet is it posible that the remaining 20 million bitcoin forever?
I think it will be forever lost. Unless you share your password to other people in case these situation happens and i believe if you have this huge amount of bitcoin in your wallet you should have contingency plans that will be use if an unexpected and tragic events occur in the future. For example, making a will of testament from a lawyer that if something like this happen, members of the family can inherit what you own from your wallet.