The offering agent has an incentive to only ever offer bets that benefit them
Right, and with two-sided bets there’s no incentive to offer them at all. One-sided bets do get offered sometimes, so you get a chance for free information (if the other agent is more informed than you) or free money (if you think they might be less informed).
Right, and with two-sided bets there’s no incentive to offer them at all. One-sided bets do get offered sometimes, so you get a chance for free information (if the other agent is more informed than you) or free money (if you think they might be less informed).