Using gambling winnings to investing business that will be yield profits is a good way to use money to find money.
Do you mean you're using the prizes of gambling as the capital for an investment? What investment? Not bad idea but it means you keep gambling to find out more capital for your investment, right? I'm not skeptical with your investment, but you're probably to try harder finding the capital from gambling as long as your business still can't bring good profit. Instead of trying to reduce gambling activity, this method may actually make you gamble excessively.
Sometimes it is very hard to see a single gamble to win huge amounts of money at once. Most time people do make profits gradually because many gamblers that are not that rich will not use huge amounts of money to gamble on a particular bet. Maybe because of risk management and strict gambling budget.
Since there is no guarantee for the win, you can't determine when you will get good prize from the gambling games. That's why many gamblers try to limit their funds for gambling, they know they can't increase the chance to win although they gambler with bigger funds. We all know that there is no way to force the good luck in gambling.