Casinos can bar players who win consistently, especially if they suspect the player is using strategies like card counting or exploiting other advantages. While winning alone is not a reason for being banned, if a player's betting patterns or behaviors indicate they are gaining an unfair edge, casinos may choose to take action. This can include limiting their bets, changing dealers, or outright banning them from the premises. Casinos are ultimately focused on maintaining their profitability and may take measures to mitigate the risks posed by skilled players.