Example you were born from rich parent, you have everything and you don't have to work since you're can study harder. While the unlucky child, they need to work when they're still in elementary school, they don't have any time since they're tired.
You're right, mate. People who are rich already have what they need, and even their children today have the money to go anywhere in this world where they wish to study. They have enough resources to sponsor them in order to go there, and that is why even after school they use what they have to get what they want, which is a job. And the poor ones who use their lives to struggle, as if they will kill themselves, you will see them yet to be employed.
Unlike the poor ones or those with less privilege, these people are struggling every day to get what they want; some of them are even in school, and they are sponsoring themselves. As you said, it is true that it is not laziness, but what they will use to get what they want is not there.