It is difficult to win this such big amounts in online gambling since for sure the casino can't pay you for this. But in the physical casino, it has a possibility but you are putting yourself at risk of winning a huge amount. I don't also saw any articles or news about winning this huge amount in online casinos or sports betting. I only see on the lottery I think the lottery has the highest rewards or pot money right if you won? In a casino, you need to bet high like half of it so that you can win that huge amount also.