All in all, I don't think they will be able to continue unless they levied the cost on the users but even then it's still hard to function without profit for the next 1.5 years.
You assume they haven't saved any of the profits they made so far. They have been running for what, 5 years? Sure the profits increase with time, but they should easilly have made 2-300M during that time. Sure they have costs and have surely taken nice salaries for themselves, but I don't think they would start from 0. My guess is they are using the coins / funds from the site to play the market around aug 1, they could probably make a huge chunk of the cash back that way.