Additional input on this recent win. The winner just spend 0.2ETH on his 2106 entries which is insane ROI for him. This is the beauty of luck based competition since anyone has a chance the big jackpot compared to wager based that usually whales dominate the game.
At the current exchange rate, that was only $597.56 USD, so winning a huge $90,000 for him/her is a life-changing win. Making over 2,000 entries and spending over $500 in bets is not everyone's cup of tea, but as they say, you can never win huge money if you don't risk big. That justifies it and would conclude that there's nothing impossible in gambling when luck is beside you.
This is why a casino that has a lot of promotions, particularly MetaWin, which has big prizes to offer, can inspire bettors to gamble and risk a significant amount for a substantial reward. That's just how it goes; some are not lucky, but at least they had a chance to win and, at the same time, enjoy this very enticing promotion.
I'm sure this gambler can afford to risk that amount, and he was just lucky enough to hit a huge prize. It might be more interesting if we also have winners coming from the forum so he can share his experience and probably techniques too.