This is crap. If you play Roulette or something similar, you will lose in the very long run as the edge is with the house.
I agree with you! No gaming machine or casino will work at a loss. In any case, the player will lose money. If it were not so then there were not so many casinos.
A player can be lucky and win against the casino, but if he plays long enough his streak will also end with a loss.