I think some of the users here forget that a casino's expense is not only withdrawals . There is advertising cost, platform operation costs, providers and employees that needs to paid etc and many more. An employee that got an equivalent salary of 0.1 btc monthly few months ago should be getting around 0.17 btc in equivalent by now. Previous deposited crypto should be converted to fiat equivalent to sustain expenses other than withdrawals from users.
maintenance and daily operations aside from keeping their license up to date are just few things a casino should consider. so absolutely yes, it is not all about withdrawal aspect. with this in mind, better play on reputable casinos with no existing complaint so you have less chance of being screwed.