Those greedy gamblers always try the casinos that promise them such profits. Although, OP hasn't claimed that everyone can have such profits but only a lucky one got the jack pot in actual. Such stories are shared to encourage the players that if you're lucky enough then you can win big.

The newbie gamblers often look after for casinos to earn a lot of money in short time but they forget that all casinos have their house edge and it's not an easy thing to beat the house edge of the casinos. Even if someone has a pretty hot strategy but his luck isn't good enough then most probably that player will face losses.