Quantum Computers are advancing much faster in calc and storage capacity. In 4 years from now, QCs will have cracked the blockchain, and Bitcoin will be gone, or at least, residing on a QC.
Wrong.
You could have been right though, if you were aware of some mathematical facts:
What we do know is that internet speed is advancing at a rate nowhere close to the rate the Blockchain is growing, I hope people have prepared for themselves some real life hobbies, especially since downloading the Blockchain will become a long process (taking a couple of weeks), andBitcointalk.org will experience more DDoS attacks.
We have underestimated quantum computers in a big way.
Quantum Computing Artificial Intelligence Is Here
https://www.youtube.com/watch?v=PqN_2jDVbOU
Or watch the extended version at https://www.youtube.com/watch?v=By56IOSZ7KY.