Blockchain and Cryptocurrency started off together, there is no one or the other as the technology Blockchain provides helped make cryptocurrency. On another side the technology Blockchain provides it can be adopted in many sectors providing its services accordingly and helping them. Cryptocurrency will always have a stake in the digital economy as with each day more people are getting into cryptocurrency and helping the crypto economy grow. All we do is speculate since we can't be sure of what'll happen in 10 years but hopefully it'll be something good.