not really even big company fails even known bank fail ..yes its digital yes its from internet and yes theres always a way to fix it right away not now but we all don't know what the future will bring us.. I am not bringing negativity here let just say this fact that there is only one permanent  in this world which is CHANGE..  .I am not saying that its gonna fail now there is always a chance this happen.
..but ofcourse whats good in failures is we always learn from it. .we don't need to be afraid if bitcoin will fail atleast we all know how bitcoin helps as through things that  we think we can not.