It seems to me that today you will not find a single online casino that would provide financial reports to their users, and not every casino will agree to do it for security reasons. Of course you can demand it from the casino but not the fact that they will do it.
Most Casino does not reveal who their owner is, what more their financial statement. I think we need a court order in order for a casino to show us their financial statement and proof of fund but I believe it will need a good reason for the court to grant our wishes.
As far as I know Vitalik Buterin proposed recently to develop mechanisms that would be able to confirm the financial component without the need to publish addresses where the funds are stored.
This is quite interesting, somehow I am curious to see how this plan works and if the company will adopt this plan in order for the public to know their financial capability. As much as I like the idea I believe only a few followers of Butering will adopt this plan.
Casinos will definitely have their own significant amount of bankroll value, otherwise they cannot stand alone and continue to operate because of lack of funds. But knowing the house will always win, then it’s impossible to see casinos losing their high amount of bankroll value. Even if the market is in a crash, I don’t think that will affect the casinos because as what I have noticed, gamblers never stop playing and they still bet with good amount.
That should be, Casino must have a reserved fund to support the withrawals of their players especially the big one, but sadly not all casino has the reserve to process high withdrawal. If we look around the forum, we can encounter several cases where the casino failed to give the amount withdrawn by the player due to lack of funds.