What will happen??
No one will have the BTC address. Hence will them isolated?
In FIAT, people can handover money to someone.. So, i predict BTC will be disappeared gradually.
I think no, it would not be the reason for bitcoin to be gone. Our local online wallet is an app and it can be linked in our facebook account, so in that case my closest family relatives can access through it and it may happen that they will use my earned bitcoin for good. They may continue to hold and invest it or to convert it into fiat and use it in practical living.