Do you have any other suggestions other than selling and exiting the market? people with access to Quantum Computers have more concerning issues than just hacking Bitcoin addresses, with the probability of breaking the encryption of strong algorithm, other important things are at stake, like military related encrypted data.
I don't think that hacking bitcoin address or wallet is very easy before someone might have done that I believe that the person have practice city in different ways and is not majority people that we can involve insult out of hacking bitcoin address because if that is possible many people would have lost their bitcoin wallet so from my understanding I don't think that is very easy for someone to hack a bitcoin wallet