On arcade games you don't get money back, it's not actually betting but purchasing a service
Guess there could be a way to detect the bots
Guess there could be a way to detect the bots
About the bots, we know that there will be people that are going to cheat on this game because this is real profit. And I haven't seen this type of service. You may not treat it as bet, but maybe the rule of the game is between you and your opponent that will bet for how much will be at stake and will get it, after the result of your fight.