This sucks, I see stories like this all the time on here. He really shouldnt have been keeping that amount of crypto online though. It should be on paper wallets or a hardware wallet. Sad for him 
Yes this huge amount of investment should be kept in a safe place .The question is why didn't the investor make sure that his investment is safe?
Hardware wallet is only a cheap investment to secure all of his crypto so why didn't he bought it if he would keep a huge amount of crypto?