It's not a bounty. Investing X money on (presumably) breaking Bitcoin's cryptography and succeed on it would literally drop the price to 0 so it would be like taking a huge loan in exchange of nothing.
Of course, assuming this is even possible.
Discussion
It would not drop price to 0.
Lots of variables - we’d see some coins move onchain but wouldn’t necessarily know if it was Satoshi or an inheritance or anything. Possibly we get a signed message but that doesn’t necessarily mean it’s Satoshi either, just that the key is his.
Possibly other Satoshi coins then move but it might again be Satoshi/heir racing to beat the next wallet crack or the quantum cracker stealing more - we wouldn’t know. And we wouldn’t know how long a crack takes - 6 months is very different to 6 weeks to 6 days to 6 hours.
There’s still utility and value in Bitcoin so long as your coins are not vulnerable to the quantum cracker - that means both having the less vulnerable utxos but also, smaller wallet balances (because an attacker is likely going to go after the biggest most vulnerable balances first).
This would definitely drop price, but not to 0. And unlike any other “theft”, there’s no other heist like this where you’ve got zero recourse to get your property back once the coins move so it could actually stick if successfully achieved unlike printing money to then go hack a bank for example.