Lose all hope

To “lose all hope” means to stop believing that something you want to happen might be possible. Is “all hope lost” for the investor that wants to do good? Should the investor that wants to do good stop believing that might be possible? The team never “lost hope,” and they had confidence that they would win one day. After getting the latest diagnosis from the doctor, the man “lost all hope” that he would ever be able to walk again.