I would say it is even bigger picture. Many times people end up earning nothing by the end of their lives while some of them would earn so much that their children and grand children already know they can sit and party their ass out for the rest of their lives!! I think these differences are all there because of the paths an individual follows. Some of them are hard working and some of them are kinda smart working or lazy asses. You bet both of them can be found in single person too.

On bigger scale, if we want to have loads of bucks then we need systematic investment plans. One cant just use their money to throw parties every weekend and spend on unwanted stuff.

Having extensive knowledge about the accounting and how to manage them can help a lot. Many individual's do not plan their activities in advance. There are too many blind investments that has no future or they were just done because someone taught them. Having professional advices can do no harm when building a proper wealth plan.

It's just that there is everything but individuals fail to do it.