"I would suspect, down the road, that a number of central banks will have digital currency," he said.
If it gets to that, unless the central banks plan to enforce the use of their digital currency, i see a situation where individuals might not be so excited to buy it reasons being that;
(a) There are so many other coins in the market, some with good prospects, why will they wantt to buy a new coin?
(b). Most people have lost trust in the government, and they will not like to get involved with a digital currency that is controlled by the government through the central bank.