There should be no surprises here, it's not that they don't want to benefit from gambling.
But they are Singapore base company which has as very strict law as far as gambling goes. Even if they have one of the biggest in Asia, they won't allow their locals to play in their own casino. Mostly tourist goes there to play.
And they have multiple laws in place to check gambling and so maybe it also includes company as well to not engage themselves in gambling.