The only time you're likely to win at an online casino is if you walk away after pocketing whatever you can get from the welcome bonus, otherwise you will get sucked in and be paying for the bumper pay packet that the CEO and shareholders will be getting next year. That's the best lesson you will learn if you think you can beat them.
You are absolutely right, friend. Gamblers that think they can beat the house are going to either get addicted or become poor because there's no way the casino can allow the gamblers to make more profit than them. I have witnessed, I have heard stories, and I have watched movies that demonstrate how bad it can turn out for someone who thinks they can use whatever strategy to win a casino. If it were that easy, then many people would have become millionaires through gambling.