Nobody asks me if I should get my money back when I *lose* money gambling so why should these people have to turn in the money they made?
If the house is being generous, I assume the house is just generous. After all, it's their business and you assume they know what they're doing.
Just like the gas station that was recently selling gas for $.29 even thought they *thought* they were selling it for $2.95. If the business is too incompetent to run their machines properly, that's their fault.
I agree.