The current situation will negatively affect everyone who owns or operates in Bitcoin. We will need to inject fresh coins inside the system in order to establish a basis to eventually clear the books by running the exchange (perhaps 200,000 coins). The costs of not doing so are incalculable at this stage.
They haven't lost 744,408 coins, that is the total they had on an exchange, they do have a deficit of about 200,000 coins. It is bad, but it could have been a lot worse.