Poker isn't Blackjack (Score 1)

You're missing that the bot is playing against people (presumably). Don't think of poker as being like blackjack, think of it as being like chess. There is always a right play in blackjack. In poker, as with chess, there are plays that are better than others but not necessarily a right play. The randomness of the cards is not a significant factor (the poker bot would only make "good" bets (reward>risk)), but the randomness of the players is. A check-raise bluff might be a good move, but a bot can't predict whether the player who is on tilt is going to call, re-raise or fold. Nor can it force players to play rationally and therein lies the problem. Look at players like Gus Hansen and Dan Negreanu who are completely unpredictable but win money because they can bully the table around.

A bot could run disadvantaged blackjack (you can't count cards online, so the best you can do is play perfect basic strategy and eat the ~0.5% house advantage), but that's an inherently losing proposition (and the casinos have banned them now anyway).