Or use services such as Xapo (Wences Casares) https://www.xapobank.com/en or shared custody multisig solution https://www.unchained.com/vaults https://casa.io/learn-more/multisig-wallets
The funny part is that legally the HD is not his anymore. So a venture capitalist could bribe the city council and do a search, no need to give up 60 or whatever % to the original owner.