The word "karma" is not on present on the vocabulary of scammers.
They have a lot of time to do it and even make it as a business. Easy money for them!
That's how bad they are; their business is to give us a headache, and knowing that, it would be foolish to still fall for the scam. Since scammers are just around the corner, we should be smart enough to minimize the risk in gambling by using only reputable casinos instead of trying new ones just for the experience and trusting them with our money. That shouldn't be our mindset.