[AaronBrown]

I don't think it's quite this bad. The dealer will never play 83o, the rules for picking the hand preclude it. Knowing the dealer's distribution of hands, the player can pick hands that maximize the chance of winning outright, rather than the chance of winning plus tying/2. Moreover, there is important information in previous cards seen and other cards on this hand.

My guess is that the casino figured out what happens if the player follows the house strategy, and maybe put a little effort into considering other strategies. But I doubt they figured out the optimal player strategy. Almost no one's going to play that way, the house makes the profit on the other 99.999% of players.

My guess is that this is beatable in theory, but it's a lot of work to analyze. Even if I'm right, that doesn't make it a road to instant riches. Like blackjack card counting, it would take a lot of play to get a reasonable standard deviation. Your pay per hour, especially considering the practice time, would not be impressive, unless you had a huge bankroll to absorb losing streaks. The only point to this is if you think it's fun to play in a casino with an edge, and you make your real profit on comps.