Each game likely used a fresh, unopened deck of cards. If each deck is non-shuffled then each time a fresh deck is opened you will see the same cards in the same order. Assuming the casino arranged for their vendor to pre-shuffle the decks it seems reasonable, if not a bit lazy, to not do a shuffle at the table. If I were the casino I'd be suing the vendor, not the gamblers.
Could this have something to do with the superstitious aspect of baccarat? The fact that the deck has been shuffled before it got to the casino but not even the casino itself has any way of knowing the order?
The article mentioned superstition, but I've never played baccarat myself.