If this ever happens then I presume the entire internet will be compromised for all of us. Bitcoin is a financial motive for such a computer to be created. But by breaking encryption, there are a TON of other things to break and steal. Such as government information and other things. Bitcoin would become useless at least for a while, clearly. Why steal something and render it useless when you can steal US, Russia, China intel and sell it?
Do you think that an average person will have access to quantum computer? They'll have access to it when everything will be quantum resistant. Good luck building a quantum computer yourself and good luck stealing or selling US, Russia and Chinese intel.
By the way, how does quantum computer beat a good 2FA and a password. I mean, after typing each password, you should be receiveing 2FA code on your smartphone, for example on your phone number. New 2FA code each time there is password written and log in is clicked. Am I saying nonsense or does it actually make a sense? I'm curious, I am not expert in this field
