Could someone trade against the value of a locked wallet somehow?

I was just thinking of this story of a bitcoin wallet that has 240 mil in value but the one who owns it lost the password and only has two tries left before it is gone apparently forever. https://www.reddit.com/r/CryptoCurrency/comments/1jnaucn/this_developer_lost_access_to_240m_in_bitcoin/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

What I am asking is could someone somehow trade against the value of a locked wallet or IDK tokenize that value into something that can be bought and sold? Likely wouldn't work with any existing currency but some smart coder could invent a sort of "unlock coin" that would have a fraction of the original value but would at least be worth something. Then if the wallet is ever unlocked whoever owns that coin gets the bit coin.

Stupider things than that have been put on a blockchain. Is this just a totally stupid idea? Discussing it with you all and thinking about it some sort of a Futures Contract but a blockchain tokenized version of one might be the solution for Locked Away digital assets.