I'm not sure what point you're trying to make. If you're trying to suggest that the casinos train or encourage croupiers to cheat so that patrons get winning streaks, then what you're describing is a fantasy. Casinos are plenty successful without those sort of shenanigans.

If anything it's the opposite: pit bosses actively police croupiers who are spinning too consistently, and croupiers are encouraged to vary their spin throughout their session to avoid bias.