That is because if someone finds out a strategy that works in the long run. The casino will find out based on their findings in our accounts.
That gives them the idea on how it goes to the most of us because they're there to make some money and business as usual to let people win some but lose more.
Yes, maybe what you said is true, but honestly I am quite doubtful if there is indeed a strategy that can provide consistent wins in the long term even though the casino never knows about it, but yes it is possible.
Another reason is because in my opinion from the beginning gambling has been designed as an activity that runs randomly, meaning that no matter how good your strategy is, in the end it will only work in the short term, or I mean only once in a while, but yes, in essence we have the same idea that most gamblers definitely lose more often than they win.
There is no strategy but management that can help someone win in the long run. Not about winning against the games and the casino.
But on how your approach is in prolonging your stay in the casino. That's where the professional gamblers are good at and not it's not really about winning.
Also in handling your money and how to manage the bankroll.