Many people have escaped 3rd world poverty. It generally means starting young and walking somewhere else, but poor at 16 is a different situation than poor at 60.
Further, there are huge differences between poor and extreme poverty. Reaching say 20$/day is a vast step up for many people.
Millions of people have escaped 3rd world poverty. It’s vastly easier for you people who can often relocate to more prosperous areas and or gain more valuable skills. Further when you talk about poverty it’s critical to understand the vast difference in living on ~2$ a day and 20$ a day in the same areas. 20$ a day can mean the ability to invest in their and their child’s future. That jump in many ways is the first rung on the ladder of prosperity, but it it a very meaningful step up.
That said, it’s very easy for people to fall into poverty. War, famine, disease, accident, etc all push people down.