In every rule, there is an exception but we also should not compare his life to us. The universe wants to make him win because of some particular reasons. If you devote your money and time with gambling, you will end up with a life completely opposite to him. Hardwork and dedication is really the key.
This is to remind us that gambling is all just about luck. It's just ironic to see that those who dedicate most of their time on gambling rarely wins. But those who just bets on a lottery occasionally are blessed by luck to have a chance to change their life.
Indeed even you often buy lottery tickets but you're not lucky then a chance to win is impossible.
But if luck strike you even its your first time to try then you'll going to win.
Its an example that not everyone has the same destiny just like this janitor so its better to spend your money in other things rather than trying your luck in lottery.