Disagree with those who think this is a slam dunk for the patrons.
My money is on the casino. These types of cases almost always end up in the casinos favor. It would be akin to a slot machine malfunctioning. They win them almost everytime.
When a slot machine goes bad, it’s a provable mechanical malfunction that results in improper awards. There’s no human factor. In this case, there was a casino representative handling the cards, and as noted elsewhere, the streak went on for 41 hands without the dealer (or anyone else) noticing. The casino failed to act, so it’s on them to pay.