One this will made this happen. No electricity. With this everything will go dark. No internet no bank transfers no tv no nothing everything is dark.
This is one of possible ways, other involves that in some crazy scenario all countries go bankrupt then maybe bitcoin would fall to or will go up so high that you could buy state for 1 bitcoin.
That is a nice answer. I would also say if all governments do not get their taxes, because of cryptocurrencies, they would work together to stop bitcoin. Maybe they find a way to stop it, but it will be much expensive.