The way gambling is wired, the chances of winning is a lot lower than the chances of losing.
Just imagine that you make like ten selections while gambling, you as a gamblers must have 10/10 for you to win that your bet, while the casino is just hoping for a single bet inside that ten selection to fail, so the casino will always be the biggest winners or benefactor in the gambling arena, that's why I believe that the casino will always have the capacity to make a huge payout of any kind to any one that won, if they are truly genuine.
You're right and I think most gambers understands irrespective of some persons decisions to go about chasing loss, gambling remain a lucky stuff, the illustration you gave should be a fronter for every gambler to know that no matter how fast and possible we want to win, it must be done with what we can afford to lose because, if anyone bet on more games in their slip just as you said it, it no become a game of chance if you win, because at that point irrespective our selections and how easy we think they are, we can still lose because inevitable occurrence.