I don't see how this whole technology is ever going to go down the drain just like that. This will never happen as the true impact of the blockchain technology can never be felt without the use of cryptocurrency. Decreasing transaction cost and having a transparent financial system will not happen and we will go back to the old corrupt ways where government officials abscond with huge sums of money.
I don't think it will ever happen, looking at the emergency of the Crypo currency, which was masterly designed through the blockchain Technology. Even for one reason or the other , the internet which was also been considered ,have been critically check before launching the Crypt currency ,havinh been seen as a method that will never fail.