So far I never saw of anyone here posted that they've beaten the household, the odds are very great but it's possible if you are a high roller but it's too risky to put yourself in that situation, you'll go broke if you are going to do this.
The concept of beating the house is temporary. You can win something big but your greed will make you play with it again and lose it. If you are not someone who plays on instinct and stops with a green stats then you have actually beaten the house, temporarily.
Now if you withdraw that money and leave, never to come back with that money on any other gambling site then you have made a profit from the casino. This is rare because either that person rolls that money immediately or after a few days when their inner greed keeps telling them to play more. Hence the house will be profiting in the long run.
The inner greed usually win over him leaving out. The house will be out of business so you don't have any place to gamble if people beats the house, they will give you chance to enjoy and earn earnings but beating is almost impossible. They'd prefer to scam the gamblers than allow you to beat them and in that case you may not withdraw your funds and will be subjected for review that will last months til you quit.