~snip
If odds can be set to zero, and no one be able to win, is it not possible that some casinos might be using this means or method to cheat slot players off their hard earned money?
Yea it is possible but majority will be from bug or internet malfunction. Apart from that I don't think gambling site will take such Risk of manipulating the slot knowing trie well the penalty.
Slot games are fair because they only rely on luck to win, but if players spend a lot of money without a single win, of course there is a problem with the casino because it is impossible to have spent a lot of money but there is no win at all, I think that doesn't make sense. Casinos will do whatever is best for the comfort of their players because that can also affect their reputation, now if there are many players who have spent a lot of money without any wins at all, it is prone to making them get a bad reputation. In addition, we ourselves must be able to find a casino that does have a good reputation with a balance of wins and losses, even though we will not get a comparable win, at least there are other people who win when we lose so there is indeed a turnover of money that is done not only draining all the players' money without any winners at all.