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
I think you just exaggerate things, if there is risk with quantum computing, then bitcoin or blockchain technology will adapt, simply as that. Of course bitcoin is a speculative asset that's why the price is affected by any news, be it positive or negative. Good if Google attracts millions of investors but it doesn't mean that it will make it harder for bitcoin or the rest of crypto in general to grow. Investors like to diversify, so you could see them going to precious metals or stocks or even crypto, nothing to worry about at this point.