I would love to see a reply to all of them by the accused party.
To me, their silence speaks volumes. If they would have satisfying answers, they would have given them by now.
There's always 2 sides to every story and then there's the truth. without knowing exactly how much money they "lost" we can't really know anything.
Again: this doesn't matter. Their maximum profit combined with the house edge should ensure they never lose a significant portion of their bankroll. You win some, you lose some. And in the casino's case, they win more than they lose.