Here's an interesting discussion from Section 8 - Dormant Wallets:
If a nation state develops a sufficiently powerful quantum computer. Seizure of the Satoshi-era bitcoin wallets without post quantum protections would fund either rogue actors or nation states.
> Indeed, some governments will have the option of using CRQCs (or paying a bounty to companies) to acquire these assets (possibly to burn them by sending them to the unspendable OP RETURN address [321]) as a national security matter. As before, blockchain’s loss of the ability to reliably identify asset owners combined with the laches doctrine [319] enables governments to argue that the original owners, through years of inaction, have failed to assert their property rights
As soon as activity is detected and reasonably atributable to sha256 being broken, bitcoin goes to zero.