This is Quit sad but there is nothing they could do. when its come to maintenance and security its quit expensive so when you are not getting returns its does not make it a business. I really appreciate how the has made it publicly without running away with peoples asset.
You're right, yeah like Cryptopia 
i think it's different from cryptopia cases.
Cryptopia closed because they got hacked and lost million of users fund but on coinexchange closed because of purely a business decision
i usually use coinexchange to trade there because they listed many coins that i can use to Arbitrase between 2/3 exchange
Cryptopia was hacked by Cryptopia team 90%