Education will never guarantee 100% of people will be successful, I have many friends who are educated and academically very good, when in the IQ test they have high IQ, but most of them are still working with salaries that I think are low, I once invited them to go out and Business or looking for other decent jobs, but most of them do not want and feel comfortable and afraid if they fail.
The point is only one, namely your friends who are still very afraid of failure and maybe they also don't have their own experience in opening a business even though they have a high IQ. And it could be that the high IQ that your friend has is only about the theory of lectures that he has memorized, while there is absolutely nothing to try.
And according to my assessment for them (friends), you still don't deserve to be called have a high IQ because they are still afraid to try something related to business problems.
So that they still want to survive under other people's orders until now.