In theory, there is a remote possibility, but on practice we can see that btc is just getting better every time and the community is increasing. Since people keep using it, btc will not die.
thats right, if one user stops using bitcoin and 2 users starts using it then it wont effect its value or popularity at all. We can see these days that the community is increasing drastically so if more users start investing in bitcoin it will make it better but wont let it die soon.