Here the OP has only listed the winners. But there may be many defeats history behind this winning.
Exactly, this is the main question behind the story whether are in profit or still in negative when they win that amount?
However, those who win here are lucky. These win will not always be happen.
No doubt about the luck, no one will win such a big amount without luck regardless how much they have lost/spent before winning that huge amount.
I can only hope that they can spend what they won wisely and hopefully they did not gamble more than what they used to do after the huge win.
Everyone is only after the result but never interested in what someone had passed through for a longer time before the big jackpot happens. Those people that are having bigger profits fr ok m gambling may have paid the price so far so we should be always surprised of what we see but we should try as much to know how the journey went. I have seen gambler that lost more than a million dollar and later won two million dollars after 3 months.