yes I am disagree. the bitcoin has been reached to every country and go forward successfully. there is no chance to finish or to failure of the bitcoin. it is better until than gold.
There is a chance for a bitcoin failure, but it is only in my situation after 2040 when all his stock is mine up and you can think of what's next to itself.
At this stage, the only thing that would make bitcoin a failure is if every country stand against it and declare it illegal which obviously would cause serious dump and the loose value hugely. However, we should understand that the community is what makes bitcoin what it is and cannot be controlled by any government. Also, most of them are already accepting that fact and already regulating it, so tell me your reason why you think it would be a failure.
This would affect the price of bitcoin so it will go to zero i think. If every country bans it bitcoin will have no chance even satoshi cannot save it then because bitcoin is not that strong.
It is also unstable so it will have a hard time fighting it.