Well it's not basically about being educated or graduating with the best grades that makes you wealthy, it's about determination, being consistent and also persistent cause success and wealth are not achieved in one day or immediately after graduating. In as much as you have good grades, you must still improve your skills, not only job skills, marketing or management skills but your critical thinking and problem solving skills.
That's true, There's a lot college graduates in many countries but still not that wealthy because thay didn't have a chance to explore and can show their talent. sometimes they just accept a job that is not suitable for the course they completed, there are many college graduates who if you look at it, why are they not progressing in life? it's also because of the companies that pay low wages but give a lot of workload, which is also underpaid.