As you have stated already, the gambler is just lucky to have won such a huge amount of money with little staking power. Not everyone has such luck comes to, in their gambling stakes. They will bet on a big and small amount, they won't even win a dollar, talk more of such amount until the time they decide to quit gambling on their own.
It would be stupid of that person, who has won such an amount of money, to lavish it without utilize in starting up businesses or having some investment for themselves.
On that, gambling winning comes once in a while, and it remains a game of luck, that one should not rely on, for the breakthrough of riches or that of their family