Blockchain algorithm is most secured option to have in any business as firewall.
Given your statement, You obviously are CLUELESS as to the power of quantum computing.
Your conclusion is absolutely wrong, the Google quantum computer solved a 10,000 YEAR problem in just over 3 minutes. Cracking every bitcoin in your wallet should take about 0.3 seconds with a quantum computer
You may not like the idea, it might even bankrupt you, but since when did the laws of physics change because of what YOU thought
Hard Facts