Yes, the casino won't care if the winnings are always on your side and during the game you still have small losses and have more wins.
But if you continue to win every game and never lose, chances are the casino will act and be investigated with suspicion and there will be follow-up that could hurt you because every casino has rules.
for whatever reason the house will always win and reign.
They are doing it as business and to the players a gambling or game to be played by staking money wanting to get or the desired results.
Card counting for me is not really effective for the players to win besides the casino had made things to counter this by adding more decks in the table. The card counting could no longer add a little percentage of winning the game. Sad but no way for casino to lose in gambling after all they are earning because of it in exchange for fun a d excitement to the gamblers playing blackjack.