This is the logic in which casinos use to lure people into betting with real money, by making the demo game very easy to win. Imagine what you siad that when you bet big amount, you win big, but when you bet small amount you lose it. It shows that there is a manipulation somewhere. However, demo is to make us understand the game before betting with real money, and as a responsible gambler, you should always have it in the back of your mind that gambling will only take from you, and has nothing to offer you so that you can use little amount of money to gamble that will not hurt your feelings.