BTC price is quite high now and its no surprising that they can possible close anytime without telling anybody.
This is also the possibility I think of. I know a site that goes scam already like https://livecoin.net/.. this is an exchange but it's no different since it's an online business. Maybe to those who are really concern of what is happening and have their funds stuck on the site, then make a scam accusation for the community to be aware.
Didn't know that casineos already closed. They were promoted for a time here in the forum. Even during their promotion, seemed that they didn't get enough players. Sometimes, it is a matter of promotion, the bonuses or rewards to keep up with the competition. Also, bankroll is important. If they don't have enough bankroll, they can easily be bankrupted. We will know in the next few weeks if there are still pending withdrawals on this site. That is, if they will not take this down for good.