The word 'conspired' makes it sound like a secret arrangement. If I understand the reports accurately, his requests were made openly to casino personnel, with n

The word 'conspired' makes it sound like a secret arrangement. If I understand the reports accurately, his requests were made openly to casino personnel, with no consideration offered to the individual employees. He was tempting the casino bank itself with, "I'll be a happy high-roller who keeps playing if you indulge me". So it starts to look like: the casino, experts in the game with a large staff that had both the duty and capability to monitor the situation, chose to offer a game with a positive expectation for Ivey.