well, having a process around multi signature would mostly solve it. The blockchain alone won't solve any problem. Blockchain + process may improve some processes. Last time that I checked, Brazil was/is using blockchain quite successfully to authenticate official documentations, but they still request ID validation before operations. Just the signature and registration that the operation happened, are stored in the blockchain. In their use-case, nobody will steal your wallet and transfer the asset, but in another hand it helps to take paperwork out of their way.