 This was typically the case in California until the advent of casino gambling offered by Native American tribes in the 1990s, though card rooms continue to flourish and even expand there.Since games played in card rooms are usually player-against-player instead of player-against-house, card room operators typically derive their revenues in one of two ways.In most, the dealer of each game (employed by the establishment) will collect a rake, a portion of the pot from each hand.