https://www.twitch.tv/fossygfx I saw him win on roobet. I'm sure every casino has a withdrawal limit but that doesn't mean anything to me because I'm just a low stakes player
If they fill it with a lot of money that would be risky, they know that, so that means they must be keep filling it all the time and have someone check it constantly to make sure it is always filled. This is the kind of method that would allow you to both withdraw a lot but also withdraw constantly without interruptions as well. I believe roobet would allow you to take out whatever amount you want whenever you want with ease.
It's not about how much money is in the casino wallet, it's about the limits set to avoid the unexpected for example account hijacking or money laundering, Every casino is set about AML. I just asked via live chat here is the answer
Hello, our Players Safety and Assurance team determines the Daily withdraw limits as they go through and verify the wagers, hopefully this clears it up.
Although they don't mention the withdrawal limit value it can be ascertained that there is a daily withdrawal limit.