Cryptocurrency’s need to be fully decentralised is the thorn in it’s side. Be your own bank is a bit too much for most people used to cash or a bank account they can call up if there is a problem. It has fundamental social problems that there may be solutions to but probably not.
Fusion and quantum are massive physics and engineering challenges. With ML we are already building the chips to scale, so we know it is scalable and doable.
It is a 50 to 100 problem not 0 to 1.
