I'm telling you that you are wrong. Suppose that ALL THE CARDS in a blackjack game were turned up. Every card , including each players cards and all dealers cards. The only thing that would do is allow the players to continue to hit until they beat the dealer or bust by exceeding 21. Give it up, man. There's no logical explanation for what you claim.
What you don't understand about blackjack in the casino is that the dealers hands are tied. All they do is deal cards and take your money. They don't place a bet, you do. They can't raise the stake, but you can double your bet for the next card. Then they show you their cards. If they add up to 16 or less, dealer usually must take another hit. Dealers have absolutely no choice, so knowing every card in advance offers them no further advantage in that game. A robot can do it, or you can play the electronic blackjack machine, which is less trustworthy. Btw, I have counted cards and done well. Hint: it's easy. Just count # of face cards and aces. Right there gives you an advantage over not counting. Increase bets as deck gets emptied and count nears end.