I’ve wondered if the institutional buy up of BTC via ETFs and corporate and governmental balance sheets has adequately considered this risk. Could a bad actor

I’ve wondered if the institutional buy up of BTC via ETFs and corporate and governmental balance sheets has adequately considered this risk. Could a bad actor steal BTC by cracking sha256 keys on a quantum computer? There could be a catch-22 - doing so would zero the value of btc, so if they didn’t immediately transfer to a quantum resistant asset, their heist would be worthless. Still, they could profit by shorting or it could be on agenda of other assets to just zero btc.