gabeygoat
Master Poster
The information that a particular entity (identified by a public key) owns bitcoins is preserved on the blockchain. If the owner loses the matching private key then those coins can never be transferred to a new owner.
The encryption keys are typically stored in "wallet" software that requires a password to access. If the wallet file or it's password are lost you are SOL.
Eventually bitcoin owners will die. Perhaps some will include keys in their will. Most probably won’t.