I would open a casino. That's my final answer.
I think this would be the wisest way of gambling your money (though investing some money into bonds would also possibly pay off) and it would be your way of seeing yourself "gamble" every time someone decides to wager a bet against the house. The best part is that now you're on the flip side, and you know that statistically you have the odds in your favor (but there's always the small, small chance that someone will potentially win all your money and leave) so you have to resort to recruiting a lot of people.
Their money becomes your money.
Many people lose their money from gambling, and they usually don't stop until they lose a significant percentage of their money. Thus, the bankroll doesn't matter. Losing $10 or $10 million.