The service is the house, and they take fees on bets, so they are the only ones guaranteed to win.
By that logic market makers in the stock market are basically like a casino too. No one is of course guaranteed to win in anything but at least the stock market doesn't ban you for making too much money like a casino does.
By that logic market makers in the stock market are basically like a casino too. No one is of course guaranteed to win in anything but at least the stock market doesn't ban you for making too much money like a casino does.