We are getting closer:
The boss of Google has warned that quantum computers will be able to break encryption within as little as five years, signalling the growing threat to privacy such technological advances.
https://www.telegraph.co.uk/technology/2020/01/22/googles-sundar-pichai-quantum-computing-could-end-encryption/"In a five to ten year time frame, quantum computing will break encryption as we know it today."
@ developers: When will we implement quantum computer resistant addresses?
@ satoshi: You filled the blockchain with your early mined coins and the quantum transformation will be very interesting. Who will get the most coins?