All casinos have designed to make profit in long run. So that I think there is no chance to those people who play continuously while thinking they will keep them on winning streak. The house is always win in long term for sure.
All of a sudden i remember this movie. 21? 2008 starring Jim Sturgess. They know how to count cards and they are getting the most of what they can breaking casinos. Now in the storyline, some even break the casino and took 7digits of cash from them. But... I think that's just it, and the casino is still open even then.