To be sincere with you is never easy to use the money someone won from gambling. Some do invest in something productive but some only think they can use that same money to win a bigger amount in gambling (by going back to gamble). I see such people as those who don't have any plans for themselves other than gambling 24/7. It only takes the grace of God for a gambler to think positive if not is hard. This is the same reason why many would agree that gambling is not good because nothing good comes out of it even the money won no matter how large the amount is they can't use it to do anything good but I'll always stand against that, is only those who use their head that make good use of the money won in gambling.
The only time you won’t be able to use the money you won from gambling properly is when you don’t know how to handle money naturally.
If you’re the business minded person, once that money comes into your hand you don’t immediately rush to invest (if you do so you’ll only end up with nothing at the end an that business will crumble due to lack of planning) - the first thing you’ll do is proper survey and analyse how and when you plan to start the business look at the area if it’s a place that will be able to sell that thing you intend to do before you start the business.
If you just jump into a business because a man you know is also doing it and now has multiple cars you’ll end back in your house.