Answer:
I feel like its because the kids who didnt have much grew up because they have/ had a hard life and took it out on something or someone which caused them to get locked up . It also honestly depends on the parents if the parents are supporting and loving then those kids probably have a better percentage of staying free . Then those kids that are privileged grow up with anything they need/ want , But as I said before it depends on the parents . if the parents are toxic the kid could develop mental issues and cause them to do things that will get them in prison .
Hope i could help-
Sleepy~