Quantum supremacy was a lie or a failure attempt. may be they failed to break cryptography but they showed potential risks and whole crypto industry suffered. Now, google is here with smart checking bank account by google pay. And again bitcoin or other crypto giants will have hard time. Crypto provides security, can secure privacy, giant like Amazon, twitter and apple are supporting crypto. Yet only price speculation is only factor that effect the crypto price, it seems. What if google attracts millions of new investors? what if crypto fails to attract investors? Google may make the path harder
Then what that happens, Google has succeeded to minimize or maybe eliminate cryptocurrency. And when something is eliminated in the race that can mean that it must be weak or it has failed to capture the imagination and support of its intended market. Cryptocurrency is still relatively new and there will always be forces that will compete and destroy it if they can but IF an idea and technology is strong enough (and it must be) then it can be able to survive and flourish. Survival of the fittest is the game being played all the time. Cryptocurrency is no exemption.
Now, having said the above, I don't believe that Google's quantum computing technology can be able to destroy or decapitate Bitcoin and even if they do I don't think they will do it just for the sake of doing it. Having the said technology comes with great responsibility because an outfit who will not be careful with it can have legal repercussions to face. And Google is a corporation that is avoiding any possible skirmishes with the legal community and they don't want a backlash from the expanding cryptocurrency community as well.